Dans la même collection (Journal of Chemical Education)



Périodique
Journal of Chemical Education Volume 51, Number 01, 01/1974.
Résumé : Bridging native american culture and chemistry : gas chromatography experiments that examine native foods. A simplified method for finding the pKof an acid base indicator by spectrophotometry. Variable path length cells for discovery based investigation of the beer Lambert law. Liver and onions : DNA extraction from animal and plant tissues. Ruthenium complexes with n1-organic ligands. Synthesis of molybdenum -molybdenum quadruple bonds. An easy experiment to compare factors affecting the reaction rate of structurally related compounds. Recombinant green fluorescent protein isoforms. Resonance energy transfer in peptides. Determination of thermodynamic parameters of the cyclodextrin inclusion process. A practical integrated approach to supramolecular chemistry I equilibria in inclusion phenomena. A practical integrated approach to supramolecular chemistry II. kinetics of inclusion phenomena.


Périodique
Journal of Chemical Education Volume 51, Number 02, 02/1974.


Périodique
Journal of Chemical Education Volume 51, Number 03, 03/1974.


Périodique
Journal of Chemical Education Volume 51, Number 04, 04/1974.


Périodique
Journal of Chemical Education Volume 51, Number 05, 05/1974.


Périodique
Journal of Chemical Education Volume 51, Number 06, 06/1974.


Périodique
Journal of Chemical Education Volume 51, Number 07, 07/1974.


Périodique
Journal of Chemical Education Volume 51, Number 08, 08/1974.


Périodique
Journal of Chemical Education Volume 51, Number 09, 09/1974.


Périodique
Journal of Chemical Education Volume 51, Number 10, 10/1974.


Périodique
Journal of Chemical Education Volume 51, Number 11, 11/1974.


Périodique
Journal of Chemical Education Volume 51, Number 12, 12/1974.


Périodique
Journal of Chemical Education Volume 52, Number 01, 01/1975.


Périodique
Journal of Chemical Education Volume 52, Number 02, 02/1975.


Périodique
Journal of Chemical Education Volume 52, Number 05, 05/1975.


Périodique
Journal of Chemical Education Volume 52, Number 06, 06/1975.


Périodique
Journal of Chemical Education Volume 52, Number 07, 07/1975.


Périodique
Journal of Chemical Education Volume 52, Number 08, 08/1975.


Périodique
Journal of Chemical Education Volume 52, Number 09, 09/1975.


Périodique
Journal of Chemical Education Volume 52, Number 10, 10/1975.


Périodique
Journal of Chemical Education Volume 52, Number 11, 11/1975.


Périodique
Journal of Chemical Education Volume 52, Number 12, 12/1975.


Périodique
Journal of Chemical Education Volume 53, Number 01, 01/1976.


Périodique
Journal of Chemical Education Volume 53, Number 02, 02/1976.


Périodique
Journal of Chemical Education Volume 53, Number 03, 03/1976.


Périodique
Journal of Chemical Education Volume 53, Number 04, 04/1976.


Périodique
Journal of Chemical Education Volume 53, Number 05, 05/1976.


Périodique
Journal of Chemical Education Volume 53, Number 06, 06/1976.


Périodique
Journal of Chemical Education Volume 53, Number 07, 07/1976.


Périodique
Journal of Chemical Education Volume 53, Number 08, 08/1976.


Périodique
Journal of Chemical Education Volume 53, Number 09, 09/1976.


Périodique
Journal of Chemical Education Volume 53, Number 11, 11/1976.


Périodique
Journal of Chemical Education Volume 54, Number 03, 03/1977.
Résumé : A simulated research experience for chemists and non chemists. A simple practical lab test for Freshman students. The rate constant for fluorescence quenching : an undergraduate experiment using the spectronic 20. The kinetics of nitrogen atom recombination : an undergraduate physical chemistry experiment. Organic qualitative analysis : an improved sodium fusion procedure and a new test for N and S. The sodium nitroprusside reagent : a classification test for aliphatic and aryl amines. The synthesis of acetylbenzoic acid : an experiment for a honors organic laboratory course. VitaminC content of commercial orange juices : an analytical project.


Périodique
Journal of Chemical Education Volume 54, Number 04, 04/1977.
Résumé : Effect of ionic strength on equilibrium constants : the use of a programmed or programmable pocket calculator in the laboratory. Laboratory practice for chemical technicians. Hydrogen bonding and heat of solution. A simple qualitative analysis sheme for several environmentally important elements. A facil identification of carbon-14 in labelled acetate : an undergraduate organic experiment. Determination of the kinetic constants in a two-substrate enzymatic reaction. tyrosinase : an introductory experiment with enzymes. NMR Determination of the rotational barrier in N,N-dimethylacetamide : a physical chemistry experiment. A simple titrimetric dtermination of lead in gasoline. The capillary-syringe : a convenient method for preparing air sensitive samples for melting point determinations.


Périodique
Journal of Chemical Education Volume 54, Number 05, 05/1977.
Résumé : infrared spectroscopy of tetrahedral ligands : an advanced experiment in inorganic chemistry. Simulation of experimental data, the design of experiments, and the analysis of results kinetics of catalysed ester hydrolysis. Oxidation of benzoin by hexacyanoferrate (III) : an advanced kinetic experiment. Socium perborate oxidation of an aromatic amine. Spot plate chemistry : general chemistry experiments in a depression. A copper(II) aspirinate projet for the general chemistry laboratory.


Périodique
Journal of Chemical Education Volume 54, Number 06, 06/1977.
Résumé : Winemaking in the chemistry laboratory. Identification of FD & C Dyes by visible spectroscopy : a consumer-orientad undergraduate experiment. Belousov's oscillating reaction in acid medium other than sulfuric acid. ideal and non-ideal gases : an experiment xith a surprise value. Experiments with electrophilic aromatic substitution reactions. A benzidine rearrangement and the detection of trace quantities of blood : a laboratory experiment in criminalistics. The synthesis of 4-methyl-3-heptanone and 4-methyl-3-heptanol : two easily synthesized insect pheromones. Catalytic dehydrogenation of tetrahydrocarbazole : an organic laboratory experiment. an undergraduate kinetics experiment demonstrating unusual behavior of kobs. Photohydration of pyridine in aqueous solution : an undergraduate experiment in photochemical kinetics. Binary heterogeneous vapor-liquid equilibrium : a physical chemistry experiment. Nuclear magnetic double resonance using weak pertubing RF Fields. Determination of the molecular weight and subunit stoichiometry of a protein.


Périodique
Journal of Chemical Education Volume 54, Number 08, 08/1977.
Résumé : Determination of the latent heats and triple point of perfluoricyclobutane : the importance of simple vapor pressure study. the determination of lodide in seaweed : a general chemistry research experience. Molecular weight determination of weak acids. The fumarase reaction : a nuclear magnetic resonance experiment for biological chemistry students. Inexpensive solid-state ion selective electrodes for student use.


Périodique
Journal of Chemical Education Volume 54, Number 09, 09/1977.
Résumé : The pH of hair shampoos : a topical high school experiment; Synthesis and characterization of a macrocyclic nickel complex : an experiment to conclude an advanced inorganic or analytical course. A differential thermal analysis system for the teaching laboratory; Analysis of "industrial x=waste" : a quantitative laboratory project. A spectrophotometric assay of polyphenoloxidase activity : a special project in enzyme characterization. A different experiment on chemical composition.


Périodique
Journal of Chemical Education Volume 54, Number 10, 10/1977.
Résumé : Phthalimide, anthranilic acid, benzyne : an undergraduate organic laboratoty sequence. Carbonic anhydrase and metalloderivatives : a bioinorganic chemistry study. The determination of the pk of the pk of the dihydrogen phosphate ion : a student experiment; Industrial analytical procedure for undergraduate analytical chemistry.


Périodique
Journal of Chemical Education Volume 54, Number 11, 11/1977.
Résumé : Molecular multiple photon absorption : An undergraduate physical chemistry experiment in laser isotope separation. The experimental determination of thermal neutron flux in the radiochemistry curriculum. A merocyanin dye preparation for the introductory organic laboratory. Synrhesis ans properties of an optically active complex : A polarimeter experiment for general chemistry. An experiment involving the chemistry of systems containing metal-metal double, triple and quadruple bonds. EDTA titration of cadmium and mercury : an exercice in logic. Preparation of variable purity samples for disodium edetate volumetric analysis.


Périodique
Journal of Chemical Education Volume 54, Number 12, 12/1977.
Résumé : High performance liquid chromatography of urinary compunds : an undergraduateexperiment. Complexo-turbidimetric analysis of cations in slution. Photochemical kinetics : an integrated laboratory experience. Solvolysis of 1-hoaloadamantanes : a physical organic chemistry experiment. Reaction rates for a homogeneously catalysed reaction. The preparation of vanillin from eugenol and sawdust. Selective reduction of functionalized carboxylic acids with borane - methyl sulfide : a convenient undergraduate organic experiment. Acid phosphatase characterization : an undergraduate biochemistry laboratory experiment.


Périodique
Journal of Chemical Education Volume 55, Number 01, 01/1978.
Résumé : Polymer experiments : synthesis of Caprolactam and nylon 6. A general chemistry thermodynamics experiment. Oxidation state determinations for some reduction products of vanadium (V) : a multi colored titration. Nicleophilic substitution by phase transfer catalysis. Project for a problem oriented undergraduate organic of integrated undergraduate laboratory. The general base catalysed enlization of acetone : an undergraduatekinetics experiment. Enzymatic and colorimetric determination of total serum cholesterol : an undergraduate biochemistry laboratory experiment. The electroplating of polyetylene. Classroom/laboratory simulation of periodic temperature fluctuations in soll.
.


Périodique
Journal of Chemical Education Volume 55, Number 02, 02/1978.
Résumé : a simple liquid-liquid extraction experiment for freshmen. Oxidative coupling of phenols : abiometric undergraduate organic laboratory experiment. Determination of rate constants for quabain inhibition of adenosine triphosphatase : an undergraduate biological chemistry laboratory experiment. Uranyl luminescence quenching : an experiment in photochemistry and kinetics. Vibronic analysis of the visible absorption and fluorescence spectra of the fluorescein dianion. Exchange reactions by NMR without variable temperature : an experiment using allyl-palladium complexes. heats of solution from solubility dterminations. Flow densimetry : a simple analytical technique for activity measurements by freezing point data.


Périodique
Journal of Chemical Education Volume 55, Number 03, 03/1978.
Résumé : Project-oriented physical chemistry experiments for biologists : a study of Bile Salts. Analog computer simulation of the methanolysis of acetal. An elegant neutron activation analysis : an undergraduate experiment. Phase diagram of the Lead-Tin system by differential thermal analisis. A classification test for aldehydes involving phase transfer catalysis. The synthetisis and reactions of a cobalt complex : a project for Freshman laboratory.


Périodique
Journal of Chemical Education Volume 55, Number 04, 04/1978.
Résumé : determination of the percent Na4EDTA in bathroom cleaners. An experiment for instrumental analysis : the determination of aspirin by ultraviolet absorption. Thermodynamic data from the thermochromic beffect : an undergraduate physical chemistry experiment. polymer experiments : synthesis of futuryl alcohol and furoic acid. An inexpensive laboratory flood detection device for chemistry laboratories. The solvay synthesis of sodium hydrogen carbonate : an undergraduate laboratory experiment.


Périodique
Journal of Chemical Education Volume 55, Number 05, 05/1978.
Résumé : The use of hand-held programmable calculator in evaluating freshman experiments. A stoichiometric study in the gas phase : bromination of unsatured hydrocarbons. Triboluminescence of new uranyl salts. Determination of critical micelle concentration using acridine orange dye probe : an undergraduate experiment.


Périodique
Journal of Chemical Education Volume 55, Number 06, 06/1978.
Résumé : Conjugate acid-base mixtures in the general chemistry laboratory : a comprehensive buffer experiment. A positive photoresist : the photochemical wolff rearrangement. binary solid-liquid phase equilibria. magnetic and spectral behavior of co(py)2X2 complexes : a teaching experiment. The oxidation of primary alcohols to aldehydes with pyridinium chlorochromate : an organic chemistry experiment.


Périodique
Journal of Chemical Education Volume 55, Number 07, 07/1978.
Résumé : Synthesis of chrysanthemic acid : a multistep organic synthesis for undergraduate students. A versatil operational amplifier assembly. Preparation of a polysulfide rubber. Polymer experiments : generation of poly (vinyl alcohol) and arrangement of structural units.


Périodique
Journal of Chemical Education Volume 55, Number 08, 08/1978.


Périodique
Journal of Chemical Education Volume 55, Number 09, 09/1978.
Résumé : A study of the efficacy of computer-simulated laboratory experiments. A pH titration apparatus for the blind student. Kinetics of formation of Cobalt (II) - and Nickel (II) carbonic anhydrase. Synthesis, characterization, ans photogeneration of the 2-methylpyrazinepentacyanoiron (II) complex. A laboratory introduction to competitive protein binding and radioimmunoassay.


Périodique
Journal of Chemical Education Volume 55, Number 10, 10/1978.
Résumé : Polymer experiments : synthesis of poly (B-alanine) and B-alanine. Modeling of molecular velocity distributions : a physical chemistry experiment. A room temperature proton magnetic resonance hydration number study. The microbial conversion of D-sorbitol to L-sorbose : an interdisciplinary experiment illustrating and industrial process. Affinity chromatography of lactate dehydrogenase : a biochemistry experiment. Separation experiments with fatty acids. Determination of the performance parameters of spectrophotometer : an advanced analytical experiment. An easily constructed student polarimeter.


Périodique
Journal of Chemical Education Volume 55, Number 11, 11/1978.
Résumé : A comparison of ionic and covalent lodine dihalides : an integrated experiment. Experiments with the PVC matrix membrane calcium ion - selective electrode. A student experimentation for measuring rate constants of radical recombination. Standard entropy of cristaline lodine from vapor pressure measurements : a physical chemistry experiment; A reliable inexpensive proportional temperature controllzer and differential thermometer.


Périodique
Journal of Chemical Education Volume 55, Number 12, 12/1978.
Résumé : Electrochemistry in a nutshell : A general chemistry experiment. A discovery experiment : CO2 soap bubble dynamics. A new synthesis of tertiary alkyl n-arylcarbamates from isocyanates. Amine-catalyzed isomerization of diethylmaeleate to diethylfumarate. p-carboxystyrene : A wittig procedure in aqueous medium. A synthesis of o-chlorocinnamic acid utilizing a meerwein reaction : An undergraduateorganic experiment. Amides and hydrazides from amine and hydrazine hydrochlorides. A simplifiend recording manometer.


Périodique
Journal of Chemical Education Volume 56, Number 01, 01/1979.
Résumé : Recovery of silver from laboratory wastes. C NMR stectra of styrene derivatives : an undergraduate experiment involving the application of the Hammet equation. Determination of the vibration constants of some diatonic molecules : a combined infrared spectroscopic and quantum chemical third year chemistry project. The heat capacity of metals : a physical chemistry experiment. Stoichiometry and formation constant determination by linear sweep voltammetry. Solvent selection for recrystallization : an undergraduate organic experiment. A student construted potentiometric electrode and semi-auto titrator sustem. A microcomputer contrlled transient recorder : a simple and instructive experiment in interfacing.


Périodique
Journal of Chemical Education Volume 56, Number 02, 02/1979.
Résumé : The determination of enantiomeric purity using a chiral lanthanide shift reagent : an undergraduate organic experiment. A change in the sign an NMR coupling constant : an advanced undergraduate experiment. The reaction between a vinylic ether and 2,4 dinitrobenzenesulfenyl chloride. Laboratory automation in the indergraduate curriculum : determination of polyethylene chain branching by computerized IR methode. The standars pH meters : a comparaison of procedures for different types of instruments. Coulometry experiments using simple electronic devices. Convenient laboratory storage of glassware for organic chemistry. Adapting polyethylene tubing in chemical apparatus assembly.


Périodique
Journal of Chemical Education Volume 56, Number 03, 03/1979.
Résumé : isopolyvanadates : synthesis and characterization. Wôhler's synthesis of artificial urea : a modern version of a classic experiment. Quantum defects from atomic spectra. Two organic laboratory experiments with benzylic hydrocarbons. Aqueous chromic acid oxidation of secondary alcohols in diethyl ether : a convenient undergraduate organic chemistry experiment. Isolation and characterization of bacterial DNA. A project - oriented laboratory in physical biochemistry. Thermodynamics and solubilities of salts of dipositive ions. A nonaqueous conductimetric titration for the analysis of alkaloids in cigarette tobacco. Identifacation of geometrical isomers of the cobalt (III) - iminodiacetate system : an inorganic laboratory experiment.


Périodique
Journal of Chemical Education Volume 56, Number 04, 04/1979.
Résumé : Anodizind aluminium : An electrolytic oxidation experiment fot general chemistry. "Crown ether" synthesis : An organic laboratory experiment. The purification of cytochrome C from Baker'syeast : An undergraduate laboratory experiment in biochemistry. Polymer Photooxidation : An experiment to demonstrate the effect of additives. Polarized electronic absorption spectrum at 300° and 77°K : A physical chemistrylaboratory experiment. Determination of hydratation numbers by near infrared : An advanced undergraduate experiment. Determination of lodide in milk with an ion selective electrode. A simplified apparatus for Ebullioscopic measurements of air/moisture sensitive compounds. The separation of chymotrypsin and chymotrypsinogen : An affinity chromatography experiment for biological chemistry students.


Périodique
Journal of Chemical Education Volume 56, Number 05, 05/1979.


Périodique
Journal of Chemical Education Volume 56, Number 06, 06/1979.


Périodique
Journal of Chemical Education Volume 56, Number 07, 07/1979.
Résumé : A passive nuclear debris collector. The barium hydroxide-ammonium thiocynate reaction : A titrimetric continuous variations experiment. High pressure synthesis of transition metal carbonyls. Friedel-crafts acylation : An experiment incorporating spectroscopic structure determination. An introduction to polyelectrolytes via the physical chemistry laboratory experiment. Pepsin and antacid therapy : A dilemma. How students cope with a producureless lab exercice. Preparation of acetanilide from nitrobenzene.


Périodique
Journal of Chemical Education Volume 56, Number 08, 08/1979.
Résumé : Simulations in the general chemistry laboratory with microcomputers. Experiments in quantum chemistry : The linear variation method. The determination of NO x and particulates in cigaret smoke : a student laboratory experiment. A simple experiment illustrating the structure of association colloids. A photochemical preparation of indoles : An organic chemistry experiment. Simplex optimization of yield of sec-butylbenzene in a friedel-crafts alkylation : A special undergraduate project in analytical chemistry. A demonstration of bacterial reduction of inorganic sulfate. NMR determination of n-butyllithium.


Périodique
Journal of Chemical Education Volume 56, Number 10, 10/1979.
Résumé : The principles of flow analysis as demonstrated by three lab exercices. How the Fourier transform infrared spectrophotometer works. An NMR spectrometer computer interface experiment : demonstrating how signal averaging influences signal to noise ratios. An interpretive experiment in ion cyclotron resonance spectroscopy. Normal and inverse ferrite spinels : a set of solid state chemistry related experiments. Glutamic acid in pheromone synthesis : a useful chiral synthon. High performance liquid chromatography of essential oils.


Périodique
Journal of Chemical Education Volume 56, Number 11, 11/1979.
Résumé : Investigation of some metallochromic indicators. An organic chemistry experiment for forensic science majors. Isolation and characterization of phosphatidyl choline from spinach leaves : an undergraduate biochemistry experiment. Measurement of the order parameter in a room temperature liquid crystal : an experiment for the physical chemistry laboratory. Thermodynamic analysis of a coupled chemical reaction.


Périodique
Journal of Chemical Education Volume 56, Number 12, 12/1979.
Résumé : A transition from a traditional to a project like physical chemistry laboratory via a heterogeneous catalysis study. Drugs in the chemistry laboratory : the conversion of acetaminophen into phenacetin. Kinetics of carboxylesterase : an experiment for biochemistry and physical chemistry laboratory. An inexpensive faraday balance to study effects of strong magnetic fields on reaction rates. An improved dielectric constant cell for use in student and research laboratories. The preparation of capillary tubes for the study of the critical state of carbon dioxide.


Périodique
Journal of Chemical Education Volume 57, Number 01, 01/1980.


Périodique
Journal of Chemical Education Volume 57, Number 02, 02/1980.
Résumé : The thermodynamics of ionization of the bisulfate ion : a physical chemistry laboratory experiment. An introductory level kinetics investigation. ionic strength effect on the rate of reduction of hexacyanoferrate by ascorbic acid : a physical chemistry laboratory experiment. A time lag method for second-order kinetics. Diphenylbutadienessynthesis by means of the wittig reaction : experimental introduction to the use of phase transfer catalysis.


Périodique
Journal of Chemical Education Volume 57, Number 03, 03/1980.
Résumé : Allyl alcohol plant stream analysis : relating industrial chemistry to the undergraduate laboratory. An undergratuate organic laboratory projet involving independent synthesis of novel flavones. Imposed orientation of dye molecules by liquid crystals and an electric field. Micelle catalysis of an ionic substitution reaction. Experimenting with liquid membranes. Gas chromatographic determination of methyl salicylate in rubbing alcohol : an experiment employing standard addition. A simple system to illustrate mass spectrometry principles. simple high precision laboratory valves from polythyyyylene tubing. Tetraoxaquaterene synthesis.


Périodique
Journal of Chemical Education Volume 57, Number 04, 04/1980.
Résumé : integrated experiments. The ideal synthesis or time consuming failures ? Illustrating chemical concept through food systems : introductory chemistry experiments. Photochemical reaction of tris (oxalato) ion (III). A first year chemistry experiment. Ion exchange separation of the oxidation states of vanadium. Sunthesis and electrochemistry of cyclopentadienylcarbonyliron tetramer : an advanced experiment. The heat of protonation of pyridine and chloro subsituted pyridines. A physical chemistry laboratory experiment. An introduction to high performance liquid chromatography : separation of some FD&C dyes. Phosphorescence and energy transfer in rigid solutions.


Périodique
Journal of Chemical Education Volume 57, Number 05, 05/1980.
Résumé : Experiments : Competency based modular experiments in polymer science and technology. Acylation of ferrocene : effect of temperature on reactivity as measured buy reverse hase high performance liquid chromatography. A study of liquid - liquid partitioning using reverse - phase liquid chromatography. An undergraduate analytical chemistry experiment. The chemical effects of nuclear transformations : a simple experiment for a radioisotope course. Measuremen of the magnetic exchange in chlorobridged Cu(II) dimer : advanced inorganic experiment employing the faraday magnetic susceptibility system. A functional fast flow kinetics apparatus. Use of a lanthanide NMR shift reagent in the analysis of the transretinol spectrum. On the variation infrared absorption spectra with gas presure and cell length.


Périodique
Journal of Chemical Education Volume 57, Number 06, 06/1980.
Résumé : Experiments : The use of computer-bases chemistry lessons in the organic laboratory course. Trends in the teaching of laboratory work : some views on the effectiveness of the current literature. The kinetics and thermodynamics of the phenol from cumene process. The disproportionation of an unsymmetrical azine.


Périodique
Journal of Chemical Education Volume 57, Number 07, 07/1980.
Résumé : Experiments : Use of pH difference to pump an anion across a non-aqueous phase. Coated-wire ion selective electrodes and their application to the teaching laboratory. A clock reaction with paraquat. Bicarbonate in alka-seltzer. Sampling error in a particulate mixture. Mini-column ion-exchange separation and atomic absorption quantitation of nickel, coblat and iron. Infrared spectra of simple inorganic ion pairs in solid solution. CIO (acac)3 : synthesis, reactions and spectra. Phenyl acetate preparation from phenol ans acetic acid.


Périodique
Journal of Chemical Education Volume 57, Number 08, 08/1980.


Périodique
Journal of Chemical Education Volume 57, Number 09, 09/1980.
Résumé : Experiments : Allyl palladium complexes : a simple experiment illustrating fluxional behavior. The olefin metathesis reaction : an experiment in heterogeneous catalysis. The determination of vitamin D dependent calcium binding protein in chick intestine. A spectrophotometric method for measuring diffusion coefficients. A practical and convenient diffusion apparatus. Phase equilibrium, chemical aquilibrium, and a test of the third law.


Périodique
Journal of Chemical Education Volume 57, Number 10, 10/1980.
Résumé : Esters of some phosphorus acids; Conversion of (+)- limoneneto (-) - carvone. The synthesis and proton NMR spectrum of methyl 7- cycloheptatrienylacetate. Demonstrating self acceleration of self-inhibition phenomena in chemical reactions : an experiment in alkane pyrolysis. An easily constructed and inexpensive stopped flow system for observing rapid reactions. The 1A1g to 1B2u transition of benzene.


Périodique
Journal of Chemical Education Volume 57, Number 11, 11/1980.
Résumé : An inorganic laboratory experiment involving photochemistry, liquid chromatography and infrared spectroscopy. The protolysis of [ Coen2(O2CO)] + : a realistic undergraduate kinetics experiment. Preparation of solid derivatives by differential scanning calorimetry. Electronic transitions as a probe of tetrahedral versus octrahedral coordination in nickel (II) complexes. Determination of the absolute stereochemistry of secondary alcohols. A simple demonstration of the curie-weiss law and a spin-crossover compound. A binary solid-liquid phase diagram experiment including determination of purity, enthalpy of fusion and true melting point. Radical recombination kinetics.


Périodique
Journal of Chemical Education Volume 57, Number 12, 12/1980.
Résumé : Comparing simple electrolytes and polyelectrolytes by the EMF method. Construction and evaluation of a solid state lodide selective electrode. A versatile chemical system for instruction in ESR spectroscopy. A laboratory introduction to quantitative column chromatography.


Périodique
Journal of Chemical Education Volume 58, Number 01, 01/1981.
Résumé : Filering technique : a quantitative evaluation. Futher experiments with emoglobin. separation of glycohemoglobins by ion exchange chromatography ; An early laboratory introduction tio IR spectroscopy : gaseous deteroalkanes.


Périodique
Journal of Chemical Education Volume 58, Number 02, 02/1981.


Périodique
Journal of Chemical Education Volume 58, Number 03, 03/1981.
Résumé : Experiments : The menschutkin reaction : a group experiment in a kinetic study. Rubber elasticity.


Périodique
Journal of Chemical Education Volume 58, Number 04, 04/1981.
Résumé : Experiments : Isotope exchange in prussian blue. A simple and accurate gas buret.


Périodique
Journal of Chemical Education Volume 58, Number 05, 05/1981.
Résumé : Analysis of student laboratory data : an illustration of the usefulness of an inexpensive programmable pocket calculator. Laser induced molecular fluorescence. The biochemistry of the muscle contraction process : an undergraduate laboratory experiment using viscosity to follow the progress of a reaction.


Périodique
Journal of Chemical Education Volume 58, Number 06, 06/1981.
Résumé : Evaluation of experimental data. Spectroscopy in organic chemistry at the introductory level. Protein denaturation : a physical chemistry laboratory project. A physical chemistry experiment in mossbauer spectroscopy. Interpretive experiments : nuclear quadrupole resonance of R3SbX2 compounds. A simple capillary flow meter.


Périodique
Journal of Chemical Education Volume 70, Number 04, 04/1993.
Résumé : Experiments : Preparation of 2-aminobenzaldehyde : a fragment component of floral odors. Demonstration of DNA strand breakage induced by ultraviolet light. Example of the wolff-kishner reduction procedure suitable for an undergraduate organic lab experiment : preparation of oxindole. An experiment in manual multiple headspace extraction for gas chromatography. Fiber optic sensors : their principles and fabrication. Qualitative analysis of cations using paper chromatography. Potentiometric measurements in a freswater aquarium. Synthesis and optical properties of quantum-size metal sulfide particles in aqueous solution.


Périodique
Journal of Chemical Education Volume 70, Number 06, 06/1993.
Résumé : Experiments : A freshman laboratory program without chromium. Replacing mineral acids in the laboratory : nafion-catalyzed dehydratation and esterification. The aluminium can as electrochemical energy source. A simple and reliable chemical preparation of YBa2Cu3O7-x superconductors. Crytals in capillary tubes for X-ray structural analysis : anaerobic low-temperature handling and sealing. Differential scanning calorimetry study of the cross-linking of styrene and an unsatured polyester : the chemistry of canoe manufacture. Using high field NMR to determine dehydrogenase stereospecificity with respect to NADH. Liquid chromatographic determination of malic and lactic acids in wine following malolactic fermentation. Potentiometric determination of an overall formation constant using an ion-selective membrane electrode. The 25 flow-injecor analyzer : an affordable instrument for every laboratory.


Périodique
Journal of Chemical Education Volume 70, Number 07, 07/1993.
Résumé : Experiments : Pressure measurements to determine the rate law of the magnesium-hydrochloric acid reaction. Using cation-exchange resins in two experiments for the freshman laboratory. Chemical detection of latent fingerprints. The determination of "apparent" pKa's. Isolation of piperine from black pepper. Spectroscopic eluicidation of the coordinative form of the DPPM ligand in [Mo(CO)4(n2-dppm)] and fac-Mo(CO)3(n2-phen)(n1-dppm)] complexes. Preparation and characterization of deuterated crystalohydrates.


Périodique
Journal of Chemical Education Volume 70, Number 08, 08/1993.
Résumé : Experiments : Experiments for modern chemistry : limiting reagent, stoichiometry and the mole. Identification and quantitation of riboflavin in vitamin tablets by total luminescence spectroscopy. Introducing probabilistic concepts in chemistry : the preparation of 10-24 M solution as a limiting case. Analysis of the isotropic EPR spectrum of K3[CR(CN)5NO]). Determination of sugars in food products : using HPLC and electrochemical detection at a cu electrode. Hydrochlorination of 1-propynylbenzene of alumina : a demonstration of kinetic and thermodynamic contro; using HCI produced in situ ans molecular modeling. Viscosity and the shapes of macromolecules : a physical chemistry experiment using molecular-level models in the interpretation of macroscopic data obtained from simple measurements.


Périodique
Journal of Chemical Education Volume 70, Number 09, 09/1993.
Résumé : Experiments : Statistical analysis of errors : answering a philosophical question about possibilities ans limitations. Using radioisotopes : to dtermine growth rates of marine organisms. Applications ans analogies : pictorial analogies VIII : types of formulas and structural isomers. View from my classroom : the first soviet-american chemical education workshop. Chemistry for kids : undergraduate chemistry majors mentor inner-city children with much success.


Périodique
Journal of Chemical Education Volume 70, Number 10, 10/1993.
Résumé : Experiments : Statistical analysis of errors. How to make the N-bottle problem more rigorous. A student research style report project for the general chemistry laboratory. Experiments illustrating metal-insulator transitions in solids. Photodegradation of methylene blue. A fast, easy-to-run and safe ene reaction between benzyne and B-pinene. A quantitative organic analysis using carbon magnetic resonance.


Périodique
Journal of Chemical Education Volume 70, Number 11, 11/1993.
Résumé : Experiments : A simple device for conductivity experiments. An inexpensive alternative for platinium in voltaic cell measurements. Organometallic chemistry of systems with Mo-Hg bonds. Oxidation of (R)-(+)-pulegone to (R)-(+)-3-methylapidic acid. Determining hammet sigma and rho values. Heat of solution of hydrogen chloride.


Périodique
Journal of Chemical Education Volume 70, Number 12, 12/1993.
Résumé : Experiments : A convenient method of esterification of fatty acids. Vibrational-rotational spectra : simultaneous generation of HCI, DCI, HBr and DBr. Nitratation of phenols : a two-phase system. A low-cost constant-rate buret.


Périodique
Journal of Chemical Education Volume 71, Number 01, 01/1994.
Résumé : Experiments : A student-designed analytical laboratory method : titrations and indicator ranges in mixed aqueous-organic solvents. Reliable and economical preparation of macrocyclic complexes : synthesis and reactivity of a tetraazaligand for an advanced inorganic laboratory. Fluorescence measurements of ethidium binding to DNA. Determination of paralytic shellfish poisons using liquid chromatography. A simple UV experiment of environmental significance. Chemical oscillations and waves in the physical chemistry lab.


Périodique
Journal of Chemical Education Volume 71, Number 02, 02/1994.
Résumé : Experiments : The blue bottle experiment revisited. Easily fabricated half-cells for potentiometric studies. Inexpensive instrumental analysis. Oxidation of tris (2-diphenylphosphinoethyl)phosphine. Simultaneous determinations of sulfur and heat content of coal : revitalization of a traditional physical chemistry experiment. Use of Hückel molecular orbital theory in interpreting the visible spectra of polymethine dyes. An experiment to demonstrate the effect of pH on partition coefficients in liquid-liquid extraction.


Périodique
Journal of Chemical Education Volume 71, Number 03, 03/1994.


Périodique
Journal of Chemical Education Volume 71, Number 04, 04/1994.
Résumé : Experiments : Avoiding the downstream hazard in an ionic solubility study. Two safe student conductivity apparatus. An experiment in trans-cis isomerization : synthesis and kinetics of trans-dichlorotetraamminecobalt (III) chloride. Nickel-titanium memory metal : a "smart" material exhbiting a solid-state phase change and superelesticity. PCR amplification of DNA. Caloric content of foods. A handy reagent for testing the reducing power of sugars. The study of lipid aggregates in aqueous solution : formation and properties of liposomes with an encapsulates mettalochromic dye. Testing the amylase inhibitor of the common bean. A kinetic experiment to determine traces of iton (III) and Iron (II) : using the "pyrrole blue" reaction. Inexpensive instrumental analysis. Polystyrene kinetics by infrared : an experiment for physical and organic chemistry laboratories.


Périodique
Journal of Chemical Education Volume 71, Number 05, 05/1994.
Résumé : Experiments : Chromatographic separation of plant pigments using sand as the adsorbant : an inexpensive chromatographic technique. Non-flame heat on a budget. A kinetic study of yeast alcohol dehydrogenase. Equilibrium constant of a oxidation of ascorbic acid (Vitamin C). The dehydration of 2-methylcyclohexanol revisited : the evelyn effect. Equilibrium vapor pressures : comparing pressures obtaines using a classical method with those from a laboratory-computer interface. Microemulsions as a new working medium in physical chemistry : an integrated practical approach.


Périodique
Journal of Chemical Education Volume 71, Number 06, 06/1994.
Résumé : Experiments : A simple laboratory experiment using popcorn to illustrate measurement errors. An environmental chemistry experiment : the dtermination of radon levels in water. High sensitivity gamma radiation monitor for teaching and environmental applications. Solubility of CO2 : a variation of the experiment measuring standard molar volume of a gas. Low-cost fermentor. Rubber elasticity : a simple method for measurement of thermodynamic properties. Electrophilic aromatic substitution, promoted by bentonitic clay. The hydration of 1-hexene and 1-hexyne.


Périodique
Journal of Chemical Education Volume 71, Number 07, 07/1994.
Résumé : Experiments : Photometric determination of the ate expression for MnO4 mediated organic oxidations. The sol-gel preparation of silica gels. Cyclic voltammetry with ultramicroelectrodes. A simple ring oven for microanalysis. Molecular modeling and chemical activity. Capillary electrophoresis : a fast and simple method for the determination of the amino acid composition of proteins. Experiments for modern introductory chemistry : intermolecular forces and raoult's law. The solid-liquid phase diagram experiment : updated for the physical chemistry laboratory. Enchancement of the rotation-vibration bands of HCI. Verification of the Schulze-Hardy rule.


Périodique
Journal of Chemical Education Volume 71, Number 08, 08/1994.
Résumé : Experiments : Crystal morphology and pettren formation. rare earth iron garnets. their synthesis and magnetic properties. High-temperature synthesis of anhydrous CrCl3 and the thermally controlled formation of C6Cl6 and C2Cl6. B-Cyclodextrin inclusion complexes with iodine. The hydrolysis of p-Nitrophenyl acetate : a versatile reaction to study enzyme kinetics.

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Périodique
Journal of Chemical Education Volume 71, Number 09, 09/1994.
Résumé : Experiments : The fundamental rotational-vibrational band of CO and NO : teaching the theory of diatomic molecules. Simple heat flow measurements : a closer look at polystyrene cup calorimeters. A melting point depression activity using two inorganic substances. An economical and efficient photochemical box. A simple lab activity to teach subtractive color and beer's law. Determination of calcium in analgesic tablets using atomic absorption spectrophotometry. A new quantitative pressure-volume experiment bases on the "cartesian diver". The preparation and characterization of a cellulose xanthanate based ion-exchange reagent. A simple alternative to separatory funnels for chemical extrcations. Simple and versatile vacuum and pressure reactors for air-sensitive materials.


Périodique
Journal of Chemical Education Volume 71, Number 10, 10/1994.
Résumé : Experiments : A multitechnique approach for materials characterization : using X-ray diffractometry, visible spectroscopy, and atomic absorption analysis to determine thin metal film thickness. Synthesis and conformational analysis of 1,2:3,4-Di-O-isopropylidene-D-galactopyranose. Platinium(II) chemistry monitored by NMR spectroscopy.


Périodique
Journal of Chemical Education Volume 71, Number 11, 11/1994.
Résumé : Experiments : Discovering the beer-lambert law. Cobalt cluster chemistry. An advanced inorganic laboratory experiment using synthesis and reactivity of a cycloheptatriene molybdenum complex. A qualtitative experiment for organic chemistry lab. A simple and safe catalytic hydrogenation of 4-vynilbenzoic acid. A simple competitive protein-binding experiment. A simple-to-build thermal-conductivity GC detector. Potentiometric stripping analyses : using a flexible, low-cost computerized instrument.


Périodique
Journal of Chemical Education Volume 71, Number 12, 12/1994.
Résumé : Experiments : Infrared study of tetrachlorobis (N,N-dimetthylformamide)tin(IV) : A case of cis-trans isomerism. Thermoprogrammed desorption. A mini-qualitative organic analysis session. Di-O-isopropylidene-mannofuranose : an introduction to sugar protecting groups. Synthesis and spectroscopic study of plant growth regulators phenylpyridylureas. A fast restriction enzyme experiment for the undergraduate biochemistry lab. Hydrochlorination of (R)-carvone.


Périodique
Journal of Chemical Education Volume 72, Number 01, 01/1995.
Résumé : The role of site mobility in absorption : a statistical thermodynamical approach ; boiling point and the refraction (polarizibility) of exposed atoms ; what's in a name - transition state of critical transition structure ? ; Periodic trends for the entropy of elements ; electronegativities of the noble gases ; tetrahedral geometry made simple ; group theory in advanced inorganic chemistry ; calculating equilibrium concentrations by iteration ; paramagnetic susceptibility by NMR ; a physical science discovery course. Experiments : Checking trace nitrate in water and soil using an amateur scientist's measurement guide. Analysis of cryoscopy data. An inorganic spectrophotometry experiment for general chemistry. A simplified graphical approach for determinig ligand to metal complexation ratio. Solid state redox chemistry : preparation of 1,4 naphthoquinone, hydroquinone and the corresponding mixed quinhydrone in the solid state. Use of electrochemical concentration celis to demonstrate the dimeric nature of mercury(l) in aqueous media. The problem of counting the number of molecules and calculating thermodynamic properties. Enantiomeric separation of beta-blockers by high performance. Liquid chromatography . Spherical and rod SDS micelles. A ligand binding study based on a protein assay method. Adsoption of p-nitrophenol from dilute aqueous solution. Hydrogen bonding equilibrium in phenol analysed by NMR spectoscopy. The determination of "apparent" pKa's. Determination of enthalpy of vaporization of pure liquids by UV spectrometry. A laboratory method for the determination of Henry's law constants of volatile organic chemical. A cheap and effective giovebag for the undergraduate laboratory.
Descripteurs : thermodynamique / vaporisation / géométrie


Périodique
Journal of Chemical Education Volume 72, Number 02, 02/1995.
Résumé : Bunsen's batteries and the electric arc ; spontaneity, accessibility, irreversibility, "useful work" : the availability function, the Helmholtz function, and the Gibbs function ; spinodal decomposition as an interesting example of the application of several thermodynamic principles ; an exceptional theoretical process with internal entropy coupling ; analysis of receptor-ligand interactions ; statistics by computer simulation ; using computer-assisted personalized assignments for Freshman chemistry ; the past two decades of undergraduate research ; momentum distributions for a particle in a box ; introducing atmospheric reactions : a systematic approach for students ; creative group presentations in organic chemistry ; cooperative learning : a approach for large enrollment courses ; science education outreach by mobile units ; encouraging tomorrow's chemeists : university outreach program bringing hands-on experiments to local students ; cubic and related structures of many types of crystals : a single illuminated model. Experiments : Acid volatile sulfides (AVS) in sediment. An environnemental chemistry experiment. Nucleophilic and enzymic catalysis of p-nitophenylacetate hydrolyis. A modular raman spectroscopy system using a helium neon laser that is also suited for emission spectrophotmetry experiments. A versatile support for laboratory stirring motors.
Descripteurs : thermodynamique / étude chimique / pile


Périodique
Journal of Chemical Education Volume 72, Number 03, 03/1995.
Résumé : Experiments : Thermal deshydratation of crystalline hydrates : microscopic studies and introductory experiments to the kinetics of solid state reaction. Charles'law of of gases : a simple experimental demonstration. Experiment for modern introductory chemistry. The temperature dependence of vapor pressure. A novel method for examination of vapor liquid equilibria. A transferable gas container (TGC). Improving the balloon inert athmosphere technique. Change of forms of cadmium in the aquatic environnement. An enhanced chromatographic technique for the preparative scale purification of acetyl ferrocene. The synthesis and analysis of copper(II) carboxylates. Preparation of (S)-(+)5,8a-dimethyl-3,4,8a-tetrahydro-1,6(2H,7H)-naphthalenedione : an undergraduate experiment in asymmetric synyhesis. The identification of aspirine-free Bayer products : an alternative to the classical TLC of analgesics. An easily constructed salicylate ion selective electrode for use in the instructional laboratory. Baker's yeast reduction of alpha-Diketones : a four hour experiment for undergraduate students. Liquid chromatographic determination of UV absorbers in sunscreens. Isotope ratio, oscillator strength, and band positions from CO2 IR spectra : a physical chemistry experiment. Spectrofluorimeters as light scattering apparatus : application to polymers molecular weight determination.
Descripteurs : instrument de mesure / atome / chimie organique / Fourier, Joseph : 1768-1830 / chimie minérale


Périodique
Journal of Chemical Education Volume 72, Number 04, 04/1995.
Résumé : Kinetics in thermodynamic clothing : fun with cooloing curves. Corrosion inhibitors for aluminiun. Photocatalytic destruction of an organic dye using TiO2 and solar energy. Revitalizing the gravimetric determination in quantitative analysis laboratory. Characterization of low-valent nickel complexes stabilized by bis(diphenylphosphino)methane using multinuclear NMR and IR spectroscopy. Characterization of the product from the thermal decomposition of chronium(III) nitrate and urea. Hammet correlations of amide proton chemical shifts. Measuring carbon monoxide in auto exhaust by gas chromatography. A laboratory experiment on extracolumn band broadening in liquid chromatography. Flash chromatographic separation and electronic absorption spectra of carotenoids. 3,9-diaryl-2,4,8,10-tetraoxaspiro[5-5]undecanes by rapid microscale preparation. An undergraduate organic synthesis, spectroscopy and molecular modeling project : asymmetric lewis acid catalyzed diels-Alder reaction of menthyl acrylate with cyclopentadiene.
Descripteurs : médecine légale / police scientifique / enseignement scientifique / étude chimique / instrument de mesure


Périodique
Journal of Chemical Education Volume 72, Number 05, 05/1995.
Résumé : Experiments : Continuous liquid-sample introduction for bunsen burner atomic emssion spectrometry. Sapling and analysis for lead in water and soil samples on a university campus. Ascorbic acid determination in natural orange juice : as a teaching tool of coulometry and polarography. The dehydrochlorination of PVC. Introductory crystallography in the advanced inorganic chemistry laboratory. Acetylation of ferrocene : a study of the freidel-crafts acylation mechanism as measured by HPLC using an internal standard. Electrophilic aromatic substitution discovery lab. An apparatus to serve as a substitutefor three-neck flasks. Bromination of disubstitute arenes : kinetics and mechanism. Steric hindrance by bromination of alkylbenzenes. Resistance measurement as a tool for corrosion studies. An undergraduate laboratory experiment for the direct measurement of monolayer-formation kinetics. A simple infrared cell for gases. The effect of diffusion due to a temperature gradient on the measurement of the N2O4-NO2 equilibrium constant. Large-scale sublimation and evaporative-distillation using an improved apparatus.
Descripteurs : alchimie / étude chimique / thermodynamique / composé ionique / composé moléculaire


Périodique
Journal of Chemical Education Volume 72, Number 06, 06/1995.
Résumé : Experiments : Synthesis of 1,1,1,3,3,3-hexachloro-2,4- diisobutylcyclo-diphosphaz(V)ane. Charge distribution in 1,1 -dicyano-2-arylethenes : an undergraduate organic experiment utilizing the knoevenagel condensation and NMR spectroscopy. A centenary synthesis of carone and dicarvelone. Photoenolization. Characterizing resins according to organic ion exchange and chelating ion exchange. Kinetic study of the enzyme urease from dolichos biflorus. A laboratory experiment illustrating the properties and bioavailability of iron. Binary-solution critical opalescence : mole fraction versus temperature phase diagram. Heterogeneous photochemistry. Rapid IR sampling methods for the organic chemistry laboratory using a diffuse reflectance accessory. Diffusion of water vapor. Obtaining a spectrum easily using a single-beam spectrophotometer. The tube-in-tube solution for gas generation.
Descripteurs : métal : élément / drogue / liaison ionique / composé moléculaire / réaction nucléaire


Périodique
Journal of Chemical Education Volume 72, Number 07, 07/1995.
Résumé : Experiments : Meaningful melting points. A simple recipe for whitening old newspaper clippings. Making sparklers. The chemical bond studied by IR spectroscopy in introductory chemistry. An introductory infrared spectroscopy experiment. Two paired "Le Châtelier" reactions. "Double unknown" microscale preparation and cosy analysis of an unknown ester. Fluorescence quenching in microheterogeneous media. One-pot lodosulfonylation dehydroiodination of alkenes (E)-B-tosylstyrene.
Descripteurs : modélisation / température : physique / polymère / classification de Mendeleiev / chimie organique / biochimie


Périodique
Journal of Chemical Education Volume 72, Number 08, 08/1995.
Résumé : Experiments : More chemistry in a soda bottle : a conservation of mass activity. Structure determination using F NMR : a simple fluorination experiment of cinnamyl alcohol. A fast and inexpensive western blot experiment for the undergraduate laboratory. Using GC-MS to determine relative reactivity ratios. From titration data to buffer capacities : a computer experiment for the chemistry lab or lecture. Oxomolybdenum chemistry. A low-cost matrix isolation experiment. Construction and testing of a variable temperature potentiometry cell for student use. Chemical visualization of boolean functions.
Descripteurs : acide nitrique / électrochimie / méthane


Périodique
Journal of Chemical Education Volume 72, Number 09, 09/1995.
Résumé : Experiments : An alternative methodology for general chemistry laboratories : chemical equivalent of a metal. Synthesis and decomposition of zinc lodide. A convenient, one-step synthesis of YBa2Cu3O7-x superconductor. Photoelectroconversion by semiconductors. A pratical application of the Pb/PbO2 cell : the determination of the state of charge of lead-acid batteries. Tha addition of hydrogen bromide to simple alkenes. Regioselective methoxybromination of styrene using TBABr3 in methanol. The extraction of caffeine from tea. GC/MS analysis for the aromatic composition of gasoline. H NMR, C NMR, and mass spectrometry of 1-phenyl-1,2-dihaloethanes. Teflon tape as a sample support for IR spectroscopy.
Descripteurs : alchimie / univers (astronomie) / composé moléculaire / composé ionique


Périodique
Journal of Chemical Education Volume 72, Number 10, 10/1995.
Résumé : Experiments : A systematic experimental test of the ideal gas equation for the general chemistry laboratory. Synthesis and characterization of potassium tris(oxalo)ferrate(III) trihtdrate : a spectrophotometric method of iron analysis. Synthesis and variable temperature H NMR conformational analysis of bis (n5 cyclopentadienyl)titanium penatasulfide. Using high performance liquid chromatography to determine the C60:C70 ratio in fulleren soot. Explorations in organometallic synthesis : characterization and structure determinations of binuclear phosphine-bridged complexes of platinum using multinuclear NMR and IR spectroscopy. NMR spectroscopy using a chiral lanthanide shift reagent to assess the optical purity of 1-phenylethylamine. Practicing quality control in a bioanalytical experiment. DNA composition analysis by nuclease digestion and HPLC. Infrared spectroscopy : A versatile tool in practical chemistry courses.
Descripteurs : étude chimique / thermodynamique / oxygène


Périodique
Journal of Chemical Education Volume 72, Number 11, 11/1995.
Résumé : Experiments : The stoichiometry of the neutralization of citric acid. A simple, discover-based laboratory exercice : the molecular mass determination of polystyrene. Template synthesis of macrocyclic complexes. Diastereospecific synthesis of an epoxide. Synthesis of a bromohydrin. An analysis of the involvment of purine ribonucleotides in eukaryotic protein synthesis. Laboratory experiments on electrochemical medediation of the environment : electrocoagulation of oily wastewater. Environmental laboratory exercice : analysis of hydrogen peroxide by fluorescence spectroscopy. Cooling-trough condenser for sublimation tubes.
Descripteurs : étude chimique / rayon X / atome / phénomène ondulatoire


Périodique
Journal of Chemical Education Volume 72, Number 12, 12/1995.
Résumé : Experiments : "Who has the same substance that I have ?" : A blueprint for collaborative learning activities. From Christmas ornament to glass electrode. More plates in one chromatographic tank. Phosphatidylcholine from "healthful egg yolk varieties. Baeyer-villiger oxidation of indane-1-ones : monitoring of the reaction by VPC and IR spectroscopy. The vapor pressure of liquid binary solutions.
Descripteurs : étude chimique / composé moléculaire / atome / photosynthèse


Périodique
Journal of Chemical Education Volume 73, Number 01, 01/1996.
Résumé : The complexometric determination of calcium and magnesium in limestone using a laser photometer for endpoint identification. From lecture hall to the laboratory : the pincaol rearrangement fostering problem solving abilities and critical thinking skills of the organic chemistry student. Binding-energy curve for iodine using laser spectroscopy. GC/MS of unknown esters for teaching MS fragmentation patterns : a combination organic experiment for esterifying unknown alcohols and determining their structures by GC/MS. Phase transfer catalysis applied to oxidation. Enzymatic resolution of menthol using transesterification with methyl (2R)-(+)-2-chloropropanoate : a biocatalyzed reaction studied by NMR spectroscopy and polarimetry for an advanced undergraduate project in modern organic chemistry. Capillary gas chromatography injection : an exercice for students of instrumental analysis. Gas-phase NMR study of the DCI-HCI isotope exchange reaction. A "V" groove nebulizer for flame AAS.


Périodique
Journal of Chemical Education Volume 73, Number 02, 02/1996.
Résumé : Determination of carbon dioxide by titration : new experiments for general, physical and quantitative analysis courses. A paper vernier scale for various laboratory equipment. Determining the lead content of paint chips : an introduction to AAS. Fundamental issues of thermodynamics illuminated by conspicious inorganic chemistry : oxidation of [CO(H2O)6]3+ by hydrogen peroxide : a nonspontaneous redox reaction made feasible by thermodynamic coupling. An improved method for the separation of lead-210 from RA-DEF for radioactive equilibrium experiments : microscale liquid-liquid extraction using a polymer-supported crown ether. Determination of the solution conformation of 3' azido 3' deoxythymidine 5' monophosphate (AZTMP) : an advanced chemistry and biochemistry project using NMR and molecular-modeling studies. Experimental illustration of the utilily of lewis structures : an FTIR experiment for introductory chemistry. Methylene-bis-amide (MBA) derivatives for characterization of nitriles. An inexpensive detector for absorbance measurements in flow-injection analysis. An easy-to-build rotational viscometer with digital readout. A solenoid-operated gas or liquid saver. Multichannel DTA apparatus for the measurement of phase diagrams.


Périodique
Journal of Chemical Education Volume 73, Number 03, 03/1996.
Résumé : A colorful grignard reaction : preparation of the triarylmethane dyes from 4-bromo-N,N-dimethylaniline. Convergent synthesis of betaine -30, a solvatochromic dye : an advanced undergraduate project and demonstration. Fluorometric determination of aluminium : a quantitative experiment for the instrumental analysis laboratory. The mechanism of NaBH4 addition to aldehydes : a labelling experiment. Bromination of actanilide. Protein structure and chromatographic behavior : the separation and characterization of four proteins using gel filtration and ion-exchange chromatography and gel electrophoresis. Iron(III) chloride as a lewis acid in the friedel-crafts acylation reaction. Isolation and purification of calmodium from bovine brain : a biochemistry laboratory experiment. Luminescence decay and flash photolysis experiments using an enexpensive, laser-based apparatus. A compact steam distillation apparatus.


Périodique
Journal of Chemical Education Volume 73, Number 04, 04/1996.
Résumé : Synthesis and kinetics of hydrolysis of 3,5- dimethyl-N-acetyl-p-benzoquinone imine : an undergraduate laboratory. Bacterial toxicity assessment using resazurin reduction kinetics : an undergraduate toxicity experiment for the chemistry-biology major. Curing of unsaturated polyester : network formation. Soxhlet apparatus and chromatography columns combined.


Périodique
Journal of Chemical Education Volume 73, Number 05, 05/1996.
Résumé : The esterification of trifluoroacetic acid : a variable temperature NMR kinetics study. Chemoenzymatic synthesis of an enantiomerically pure lactone : a three-step synthesis for undergraduate organic chemistry laboratory. NMR determination of internal rotation rates and rolational energy barriers : a physical chemistry lab project. Raman spectroscopy determination of heats of vaporization of pure liquids. Bench top vortexing countercurrent extractor for controlled pH extraction of a mixture.


Périodique
Journal of Chemical Education Volume 73, Number 06, 06/1996.
Résumé : Research in undergraduate instruction : a biotech lab project for recombinant DNA protein expression in bacteria. Cation analysis scheme by differential pulse polarography. Photochemical preparation and reactivity of cis-Cr(CO)4(CH3CN)2 : an advanced undergraduate inorganic laboratory experiment. The synthesis and reactions of nickel(III) stabilized by a nitrogen-donor macrocycle. Epoxidation of alpha-methylstyrene and its lewis acid rearrangement to 2-phenylpropanal. A simple method for isolation of caffeine from black tea leaves : use of a dichloromethane-alkaline water mixture as an extractant. Determination of polychlorinated biphenyls (PCBs) in river and bay sediments : an undergraduatelaboratory experiment in environmental chemistry using capillary gas chromatography with electron capture detection. The analysis of riboflavin in urine using fluorescence. Use of gas chromatography-mass spectroscopy (GC-MS) in nonscience major course laboratory experiments. Examination of a reaction mechanism by polarimetry : an experiment for the undergraduate organic chemistry laboratory. H NMR analysis of R/S ibuprofen by the formation of diastereomeric pairs : microscale stereochemistry experiment for the undergraduate organic laboratory. GS-MS and GC-FTIR characterization of products : from classicle freshman and sophomore syntheses. The helium-neon laser-induces fluorescence spectrum of molecular iodine : an undergraduate laboratory experiment. The nitrogen-laser excited luminescence of pyrene : a student laboratory study of excimer dynamics. An easily demonstrated zero-order reaction in solution. A computer experiment in physical chemistry : linear dichroism in nematic liquid crystals. Thermal analysis of carbon allotropes : an experiment for advanced undergraduates. Determination of free-energy relationships using gas chromatography.


Périodique
Journal of Chemical Education Volume 73, Number 07, 07/1996.
Résumé : Determination of trace metal ion concentrations in seawater. Experiments for modern introductory chemistry : identification of arson accelerants by gas chromatography. IR spectroscopy using disposable polyethylene cards : a replacement for KBr pellets and mulls. Constant-current coulometric titration of hydrochloric acid. Testing the electrical resitivity of wax and copper composites. Chemical kinetics in real times : using the differential rate law and discovering the reaction orders. Mechanical coefficients of liquids by a differential expansion method. A consistent system for coding laboratory samples.


Périodique
Journal of Chemical Education Volume 73, Number 08, 08/1996.
Résumé : Simple NMR imaging. Low-cost lateral displacement refractometer for liquids : a take-home student experiment. How to offer the optimal demonstration of the electroysis of water. A simple and low-cost air sampler. Determination of the thermodynamics solubility product K°sp of Pbl 2 assuming nonidealbehavior. Determination of the dissociation constant for a monoprotic acid by simple pH measurements. Labelling histidines in cytochrome c. Use of blood-glucose test strips for introducing enzyme electrodes and modern biosensors. Molecular constants of carbon monoxide at v=0, 1, 2, and 3 : a vibrational spectroscopy experiment in physical chemistry. Understanding the difference between inner and outer-sphere mechanisms. The comparative performance of batteries : the lead-acid and the aluminium-air cells. Making an inexpensive tesla coil from a car coil. On-line surfactant monitoring by foam generation. Use of a 10cm pathlenght quartz cell for the separation of the isotopes of HCI vapor.


Périodique
Journal of Chemical Education Volume 73, Number 09, 09/1996.
Résumé : The use of a "qual" centrifuge for greatly symplifying and speeding the study of milk. An n-bottle lab exercice with no hazardous waste. Filtrates and residues oxygen from hydrogen peroxide. First day in organic lab. A new photochemistry experiment : a simple 2+2 photocycloaddition that poses an interesting NMR problem. "Course thesis" as end of the laboratory experimental program. A manageable measurement method for sodium. Operational amplifier experiment for the chemistry laboratory. Conductivity, a simple method to probe micellar solutions. The BZ reaction : experimental and model studies in the physical chemistry laboratory. Nonlinear dynamics of the BZ reaction : a simple experiment that illustrates limit cycles, chaos, bifurcations and noise.


Périodique
Journal of Chemical Education Volume 73, Number 10, 10/1996.
Résumé : Filtrates and residues : a simple method for determining the temperature coefficient of voltaic cell voltage. Zinc electrodes and the thermodynamics of a galvanic cell. Thermodynamics of air : reinterpreting the method of clement and desormes. A convenient, inexpensive and environmentally friendly method of measuring the vapor pressure of a liquid as a function of temperature. A physical chemistry lab project : the effect of composition on several physical properties of binary mixtures of common liquids. Thin-layer chromatography experiments that illustrate general problems in chromatography. Thin-layer chromatography : four simple activities for undergraduate students. Containment of spray reagents in TLC spot detection. A matrix modification experiment for use in electrothermal atomic absorption spectrophotometry. Effects of solutions physical properties on copper and chromium signals in flame atomic absoption spectrometry. A student-designed potentiometric titration : quantitaive determination of iron(II) by caro's acid titration. A convenient synthesis of the tetrasubstituted pyrrole : an undergraduate heterocyclic laboratory experiment. Synthesis of n2-dihydrogen complex, trans {Fe(n2-H2)(H)[1,2-bis(diphenylphosphino)-ethane]2}[BF4] : an experiment for an advanced inorganic chemistry laboratory involving synthesis and NMR properties of an n2-H2 complex. Novel preparation of a tetraaza macrocycle : an advanced inorganic chemistry laboratory.


Périodique
Journal of Chemical Education Volume 73, Number 11, 11/1996.
Résumé : An integrated biochemistry laboratory, including molecular modeling. The synthesis of proteins. Measurement of quantum yield, quantum requirement and energetic efficiency of the O2-evolving system of photosynthesis by a simple dye reaction. Synthesis of N-methyl -2-trichloroacetylpyrrole. A key building block in peptides that bind DNA : micro semimicro, and macro-scale organic lab experiments. Notes on vapor pressure equilibria measurements; Rapid microscale isolation and purification of yeast alcohol dehydrogenase using cibacron blue affinity chromatography. A glycosidation reaction employing montmorillonite K-10 as catalyst. Mini scale oxidation reduction in organic laboratory course : 4-nitrobenzaldehyde /4-nitrobenzyl alcohol. Microscale preparation of difluorenylidene and trans-2,3-dibenzoylspiro[cyclooropane-1-9'-fluorene]. The quantitative analysis of an analgesic tablet : an NMR experiment for the instrumental analysis course. Experiments with glow in the dark toys : kinetics of doped ZnS phosphorescence. Developpement of a low cost four color LED photometer. Mass ratio of the deuteron and proton from the balmer spectrum of hydrogen : variatiobn on an undergraduate physical chemistry experiment. Oxygenate in gasoline : a versatile experiment using gas chromatography. Air water partitioning of environmentally important organic compunds. polymert mechanical properties via a new laboratory tensile tester.


Périodique
Journal of Chemical Education Volume 73, Number 12, 12/1996.
Résumé : Determination of caffeine in beverages by capillary zone electrophoresis. Soxhlet extraction of caffeine from beverage plants. The extraction of caffeine from tea : a modification of the procedure of Murray and Hansen. Chromatographic separation of phosphoric acid from cola beverages. Determination of phosphorus in cola drinks. Determination of phosphate in cola beverages using non suppressed ion chromatography. An environmentally significant experiment using GC/MS and GC retension indices in an undergraduate analytical laboratory. Filtrates and residues. An empirical formula from ion exchange chromatography and colorimetry. An organoleptic laboratory experiment. Waste treament in the undergraduate laboratory. Use the infrared spectroscopy in monitoring a new method for the preparation of sulotroban an antithrombotic drug : a medicinal chemistry experiment. Microscale synthesis and electronic absorption spectroscopy of tetraphenylporphyrin H2(TPP) and metalloporphyrins Zn"(TPP) and Ni"(TPP). Complete assignment of proton chemical shifts in terpenes : an experiment combining 2DNMR spectroscopy with molecular modeling. Carbonyl and conjugate additions to cyclohexenone : experiments illustrating reagent selectivity. Grignard reaction of an expoxide : a mechanistic study.


Périodique
Journal of Chemical Education Volume 74, Number 01, 01/1997.
Résumé : Synthesis of a superabsorbent polymer. The gelation of poly(vinyl alcohol) with Na2B4O710H2P : killing slime. The spectrophotometric analysis and modeling of sunscreens. The acid catalyzed dehydration of an isomeric 2-methylcyclohexanol mixture : a kinetic and regiochemical study of the evelyn effect. Regiospecific ester hydrolysis by orange peel esterase. Reduction of carboxylic acids with sodium borohydride and an electrophile. Reactions of bromine with diphenylethylenes : an introduction to electrophilic substitution. Preparation and solution polymerization of diacetylenes. A-78)C sequential michael addition for the organic lab. The wittig reaction : generation, observation and reactivity of a phosphorus ylide intermediate : an experiment fot the advanced organic chemistry laboratory. X-ray diffraction investigation of alloys.


Périodique
Journal of Chemical Education Volume 74, Number 02, 02/1997.
Résumé : How efficient is a laboratory burner in heating water ? Screening and sequential experimentation : simulations and flame atomic absorption spectrometry experiments. Laser-based liquid prism sucrosemeter a precision optical mrthod to find sugar concentration. Viscosity of common seed and vegatable oils. Methylene blue-ascorbic acid : an undergraduate experiment in kinetics. A simple determination of the NO2 dimerization equilibrium constant. Calorimetric determination of aqueous ion enthalpies. Simulation and analysis of differential scanning calorimetry output : protein unfolding studies. Utilizing isolation, purification and characterization of enzymes as project-oriented labs for undergraduate biochemistry. NMR titration used to observe specific proton dissociation in polyprotic tripeptides : an undergraduate biochemistry lab. The safe and efficient evaporation of a solvent from solution. An experiment to demonstrate magntic nonequivalence in proton NMR.


Périodique
Journal of Chemical Education Volume 74, Number 03, 03/1997.
Résumé : Multidisciplinary scanning probe microscopy laboratory. Extrcation, isloation and characterization of fullerrene C60. An investigation into the absorption of infrared lightby small molecules. CO2 absorption of IR radiated by the earth. Stimulated raman spectroscopy of small molecules. From polarimeter to contact angle goniometer inexpensive conversion of laboratory equipment. Fries rearrangement accelerated by microwave radiation in the undergraduate organic laboratory. Coordination chemistry of Pd(II) complexes with p-donor ligands : an introduction to synthesis and structural characterization in coordination chemistry.


Périodique
Journal of Chemical Education Volume 74, Number 04, 04/1997.
Résumé : An U-tube experiment to discover the curve in boyle's law. A simple audio conductivity device. Easily built low-cost apparatus to measure polymer conductivity. Synthesis and characterization of a conducting polymer. The TCICA test for distinguishing primary and secondray alcohols. Identification of primary, secondary and tertiray alcohols : an experiment in spectrophotometry, organic chemistry ans analytical chemistry. Microburger biochemistry : extraction and spectral characterization of myoglobin from hamburger. Catalytic transfer hydrogenation reactions for undergraduate practical programs. Chromium(III) acetate, chromium(III) acetate hydroxides, or u3 oxo-esakis-(u2-acetato-O)-triaqua-trichromium(III) acetate? determining the structure of a complex compound by analytical and spectroscopic methods. Photochemistry of benzophenone in 2-propanol : an easy experiment for undergraduate physical chemistry courses. An apparatus for fast dilution. An innovative design of a small reactor.


Périodique
Journal of Chemical Education Volume 74, Number 05, 05/1997.
Résumé : Projects in the physical chemistry laboratory : letting the students choose. Quantification of polystyrene acylation by IR spectroscopy. Vibrational line profiles as a probe of molecular interactions. Effects of dielectric constant and ionic strength on the fading of N N dimethylaminophenolphthalein in alkaline medium. Ionic strength effect on the rate of reduction of hexacyanoferrate(III) by ascorbic acid : a flow injection kinetic experiment. Kinetic solvant isotope effect. Kinetic studies using a washing bottle. Analysis of mouthwash. Properties of zeolite a obtained from powdered laundry detergent. A quantitative conductance apparatus. A low-cost and high-performance conductivity meter. Synthesis, characterization and lewis acidity of Snl2 and Snl 4. The phase-transfer-catalyzed preparation of Mo(CO)4(diphos). Simple synthesis and use of a nickel alkene isomerization catalyst : an advanced lab in inorganic/organometallic chemistry. Endo and exo-stereochemistry in the diels-alder reaction : kinetic versus thermodynanmic control. Determination of the enantiomeric purity of naproxen.


Périodique
Journal of Chemical Education Volume 74, Number 06, 06/1997.
Résumé : Propagating fronts of polymerization in the physical chemistry laboratory. Topics in chemical intrumentation. Demonstrating characteristics of a spectrophotometer's components.


Périodique
Journal of Chemical Education Volume 74, Number 07, 07/1997.
Résumé : Electrochemistry "discovery" course for undergraduates. A new investigative sophomore organic laboratory involving individual research projects. Synthesis of 4-nitro-1-pentynylbenzene : an example of transitional metal-mediated cross-coupling. Microscale dehydration of cyclohexanol using a macroreticular cation exchange resin as catalyst. Synthesis of tetrahydro-2-(2-propynyloxy)-2H-pyran : illustrating markownikov addition, protecting groups and advanced 1H-NMR phenomena. Conversion of an alkyl chloride to a bromide (or vice versa) by homogeneous nucleophile exchange. Reduction of chlorinated dibenzodioxin and dibenzofuran formation in the beilstein test. Removing silicone grease from glassware. A general chemistry experiment incorporating synthesis and structural determination. Does copper metal react with acetic acid ? Potentiometric measurement of transition ranges and titration errors for acid/base indicators. Quantitative determination of Cr(III) and Co(II) using a spectroscopic H-point standard addition method. An integratied-circuit temperature sensor for calorimetry and differential temperature measurement. A room-temperature emission lifetime experiment for the physical chemistry laboratory. Influence of pH on drug absorption from the gastrointestinal tract : a simple chemical model.


Périodique
Journal of Chemical Education Volume 74, Number 08, 08/1997.
Résumé : Introducing scientific reasoning with the penny lab. Guided discovery : law of spectific heats. Low-cost constant-temperature heating block. An inexpensive demountable IR cell fitted with glass windows.A simple laboratory demonstration of electromism. A simple undergraduate concentration step experiment. Convection in a continuously stratified fluid. Dtermination of pK from luminescence quenching data. An undergraduate physical chemistry experiment on the analysis of first-order kinetic data. A novel experiment in chemical kinetics : the A=B -> C reaction system. Kinetics of internal rotation of N N-dimethylacetamine : A spin-saturation transfer experiment. Study of molecular clusters in undergraduate physical chemistry. Alternative compounds for the particle in a box experiment. The gravimetric analysis of nickel using a microwave oven. Extraction and assay of ornithine decarboxylase : a laboratory experiment that introduces principles of radiochemical enzymatic assay. An undergraduate organic chemistry laboratory experiment : the multistep synthesis of a modified nucleoside. A thermostablemicrobial enzyme for fast preparative organic chemistry : preparation of (R)-(+)-1 phenylethanol from 1-phenylethyl pentanoate and n-butanol. Methylation of isobutyrophenone using potassium triphenylmethide. A laboratory exercice in statistical analysis of data.


Périodique
Journal of Chemical Education Volume 74, Number 09, 09/1997.
Résumé : Getting close with the instructional scanning tunneling microscope. The dependence of resistance on temperature for metals, semiconductors and superconductors. Constructing chemical concepts through a study of metal ions : guided inquiry experiments for general chemistry. Determination of formaldehyde in cigarette smoke. Identification of volatile flavor components by headspace analysis. Integration of GC/MS instrumentation into the undergraduate laboratory : separation and identification of fatty acids in commercial fats ans oils. Determinationof crude fat in food products by supercritical fluid extraction and gravimetric analysis. The sweetness of aspartame. Simultaneous determination of aspirine, salicylamide and caffeine in pain relievers by target factor analysis. Capillary electrophoresis in the undergraduate instrumental analysis laboratory : determination of common analgesic formulations. Separation of enantiomeric barbiturates by capillary electrophoresis using a cyclodextrin-containing run buffer. Determination of caffeine and other purine compounds in food and pharmaceuticals by micellar electrokinetic chromatography. Quantitative determination of caffeine in beverages using a combined SPME-GC/MS method. Showing properties of food foams with common dairy foods. The pH of sweat of horses : a student-devised study by science and health science majors. The remarkable resilience of beer's law.


Périodique
Journal of Chemical Education Volume 74, Number 10, 10/1997.
Résumé : An ex. toillustrate the importance of sample preparation in chemical analysis. The floating siphon : an effective homemade device for high dilution experiments. Analysis of the essential nutient strontium in marine aquariums by atomic absorption spectroscopy. pH dependent redox couple : illustrating the nernst equation using cyclic voltammetry. Potentiometric acid-base titration with activated graphite electrodes. Celcius to fahrenheit and vice versa. UV-visible spzectroelectrochemistry of reduction products of anthraquinone in dimethylformamide solutions. Eliminating mercury thermometers from the lab.preparation of semiconducting materiasis in the laoratory. Molecular photophysics of acridine yelow studies by phosphorescence and delayed fluorescence. IR spectroscopy or "Hooke's law at the molecular level". A stopped-flow kinetics experiment for advanced udergraduate laboratories : formation of iron(III) thiocyanate. Kinetics vs thermodynamic control in the dehydratation of 2-methylcyclopentanol : a two-part laboratory experiment utilizing the grignard reaction and GC-MS. Ozonolsys experiment using gas chromatography-mass spectrometry. Dry-column flash chromatography. Regioselective hydrochlorination. Microwave-assisted wolff-kishner reduction reaction. Resolution of racemic phenylsuccinic acid using (-) -proline as a resolving agent. Determination of critical micelle concentration of some surfactants by three techniques. Determination of enthalpy of vaporization using a microwave oven.


Périodique
Journal of Chemical Education Volume 74, Number 11, 11/1997.
Résumé : A mini quantitative carbonydrate analysis session. An introduction to research in protein folding for undergraduates. Calculating microspecles concentration of zwitterion amphoteric compounds : ciprofloxacin as example. An easy and inexpensive flash spectroscopy experiment. Visible spectra of conjugated dyes: integrating quantum chemical concept with experimental data. Measuring of evaporation rates of organic liquids by optical interference. Nonaqueous interfacial polycondensation : a novel technique for the encapsulation of water soluble solids. on the disproportionation of cyclohexene and related compounds; An easy way to make chlorine water. Simple preparation of palladium (II) complexes and determination of their structures by infrared spectroscopy. How big is the baloon ? Stoichiometry using baking soda and vinegra. Rigorous potentiometric determination of metal complexes stability constants. The preparation of TIBF. A microscale laboratory heating system. A convenient procedure for microscale benzoylations.


Périodique
Journal of Chemical Education Volume 74, Number 12, 12/1997.
Résumé : Environnemental projects in the quantitative analisis lab. Assessing the fate organic contaminants in aquatic environnements : mechanism and kinetics of hydrolysis of a carboxylic ester. Voltammetric determination of Ni and Co in water samples. oil spill remediation using magnetic particles : an experiment in environnemental technology. Microscale indirect electrolytic destruction of organic wastes. Kinetics of p-nitrophenol degradation by pseudomonas sp. Carbon dioxidedissolution as a relaxation process. Rain, lakes and streams : inverstigating acidity and buffering capacity in the environnement. Illustrating deviation in the beer-Lambert law in an instrumental analysis laboratory : measuring athmospheric polluants by differential optical absorption spectrometry.


Périodique
Journal of Chemical Education Volume 75, Number 01, 01/01/1998.
Résumé : Inserting an investigative dimension into introductory laboratory courses. Problem-solving teaching in the chemistry laboratory : leaving the cooks. Thermodynamically and kinetically controlled enolates : a project for a problem-oriented laboratory course. Rediscovery of an extraction technique. JCE classroom activity #5 charge it an activity with electricity. Photodimerization of anthracene : A photochemical cycloaddition. Notes on converting to microscale. Convenient synthesis of a lactone butyrolactone. A grignard-like organic reaction in water. Grignard synthesis of various tertiary alcohols. A kinetic experiment to demonstrate the role of a catalyst in a chemical reaction : a versatile exercice for general or physical chemistry students. Iron(III) thiocyanate revisited : a physical chemistry equilibrium lab incorporating ionic strenght effects. Micellar aggregation numbers a fluorescence study. The ligand field spectra of copper (II) complexes.


Périodique
Journal of Chemical Education Volume 75, Number 02, 02/1998.
Résumé : Using laboratory and color to anallyze household products : a 10-12 hour laboratory project at the general chemistry level. Small-scale kinetic study of the catalyzed decomposition of hydrogen peroxide. Enzymatic synthesis of methyl butyrolactone from racemic methyl hydroxypentanoate : a microscale advanced bioorganic chemistry laboratory project. An integrated extraction crystallisation distillation experiment . Nucleophilic addition vs substitution : a puzzle for the organic laboratory. An aldehyde of orange oil and the aqueous solubility of d-limonene : two complementary gas chromatography experiments. Enhanced luminescence of lanthanides : determination of europium by enhanced luminescence. Applying statistics in the undergraduate chemistry laboratory : experiments with food dyes. An experiment in electronic spectroscopy : information enhancement using second derivative analysis.


Périodique
Journal of Chemical Education Volume 75, Number 03, 03/1998.
Résumé : Non-ideality and ion association in aqueous electrolyte solutions : overview and a simple experimental approach. Fractional factorial experimental design as a teaching tool for quantitative analysis. A unique qualitative GC experiment for an undergraduate instrumental methods course using selective photoionization detectors. Using cyclic voltammetry and molecular modeling to determine substituent effects in the one-electron reduction of benzoquinones. Determination of density of liquid by a capillary with two pinhole ends. Stepwise equilibria in gas-phase reactions : the alkylation of benzene. A modified microburet for microscale titration.


Périodique
Journal of Chemical Education Volume 75, Number 04, 04/1998.
Résumé : Analysis of iron in ferritin, the iron-storage protein. Teaching protein crystallization by the gel acupuncture method. Synthesis of some cobaloxime derivatives : a demonstration of "umpolung" in the reactivity of an organometallic complex. Kinetics-based indirect spectrophotometric method for simultaneous determination of MnO4 and Cr2O12- : a modern instrumental analysis laboratory experiment. Copper content in synthetic copper carbonate : a statistical comparison of experimental and expected results. Designing a self-contained qualitative analysis test for transition metal ions. An improved method for students flame tests in qualitative analysis. Use of a titanium metallocene as a colorimetric indicator for learning inert atmosphere techniques. Spectroscopy in sol-gel matrices : an open-ended laboratory experience for upper-level undergraduates. Determining the authencity of gemstones using raman spectroscopy. Quantitative HPLC analysis of an analgesic caffeine formulation : determinationof caffeine. A guided inquiry approach to NMR spectroscopy. Incorporating organic name reactions and omitting qualitativeanalysis in an unknown identification experiment.


Périodique
Journal of Chemical Education Volume 75, Number 05, 05/1998.
Résumé : Nanosecond time-resolved fluorescence spectroscopy in the physical chemistry laboratory : formation of the pyrene excimer in solution. Surface-enhanced raman spectroscopy : a novel physical chemistry experiment for the undergraduate laboratory. Analysis of soft drinks : Uv spectrophotometry, liquid chromatography and capillary electrophresis. A low-cost auto-stop hydraulic press for making KBr discs. The baker's yeast reduction of keto-esters in organic solvents : a one-week research project for undergraduate students. Determination of the equilibrium constants of a weak acid : an experiment for analytical or physical chemistry. Kinetic demonstration of intermolecular general acid (GA) catalysis in thiolysis of 9-anilinoacridine : an experiment on enzymology physical organic chemistry for advanced undergraduate postgraduate students. Cinnamaldehyde by steam distillation of cinnamon. Laboratory experiments on electrochemical remediation of the environment part 3 : microscale electrokinetic processing of soils. A simple organic microscale experiment illustrating the aquilibrium aspect of the adol condensation. Delivery of uniform and countable drops. Claisen's flask and its evolution. Swift measurement of densities of low-melting-point compounds. A simple streaking device for preparative thin-layer chromatography. Using linux/Macromodel to do quantum chemistry in the physical chemistry lab.


Périodique
Journal of Chemical Education Volume 75, Number 06, 06/1998.
Résumé : Demonstrating electron transfer and nanotechnology : a natural dye-sensitized nanocrystalline energy converter. Saving your student's skin undergraduate experiment that probe UV protection by sunscreen and sunglasses. Working with enzymes where is lactose digested ? An enzyme assay for nutritional biochemistry laboratories. Detection of non-B-DNA secondary structures by S1 nuclease digestion. Synthesis of a ferrocene-based polymer via ring-opening polymerization. Digital capacitance meters in the physical chemistry lab. A convenient apparatus for small-scale dyeind with indigo. A microscale synthesis of mauve. An efficient microscale procedure for the synthesis of aspirin. Modified carbon electrodes for microscale electrochemistry. The microscale synthesis and electrochelmistry of low-valent mononuclear complexes (n3-C3H5)3X(X = I Br Cl). A variety of electrochemical methods in a coulometric titration experiment.


Périodique
Journal of Chemical Education Volume 75, Number 07, 07/1998.
Résumé : Bilinear regression analysis as a means to reduce matrix effects in simultaneous spectrophotometric determination of CrIII and CoII : a quantitative analysis laboratory experiment. A three-cent reusable craig tube. Electrochemichal behavior of electrodeposited prussian blue films on ITO electrodes. Intermolecular forces in introductory chemistry studied by gas chromatography computer models and viscometry. Hybridization and structural properties : a physical organic chemistry experiment. Synthesis and structure-property relationships in (n6-arene)Cr(CO)3 chemistry : from guided experiments to discovery research. Understanding chemical structure / physical property relationships in polymers through molecumar modeling and thermal analysis techniques. Determination of heat capacity of liquids with time-resolved thermal lens calorimetry : a more accurate procedure. The energy profile for rotation about the C-C bond in substituted ethanes : a multi-part experimental and computational project for the physical chemistry laboratory.


Périodique
Journal of Chemical Education Volume 75, Number 08, 08/1998.
Résumé : Fourier transform nuclear magnetic resonance spectroscopy experiment for undegraduate and graduate students. Atomic emission spectra using a UV-Vis spectrophotometer and an optical fiber guided light source. Infrared spectroscopy determination of lead binding to ethylenediaminetetraacetic acid. Purification of bovine carbonic anhydrase by affinity chromatography. Automated protein assay using flow injection analysis. An experiment in the sampling of solids for chemical analysis. Using microwave sample decomposition in the undergraduate analytical chemistry. An inexpensive disposable cannula filtration device. Liquid chromatography with electrochemical detection (LC-EC). Laboratory experiments on electrochemical remediation of the environment part 4 : color removal of simulated wastewater by electrocoagulation-electroflotation. Design and operation of a portbale quadrupole mass spectrometer for the undergraduate curriculum.


Périodique
Journal of Chemical Education Volume 75, Number 09, 09/1998.
Résumé : Determination of sugar content in commercial beverages by density : a novel experiment for general chemistry courses. Integrated computers into the first-year chemistry laboratory : application of raoult's law to a two-component system. Raoult's law : binary liquid-vapor diagram. An inexpensive detector for gas chromatography. A solid-state water flow fault safety switch for the chemical laboratory. Automatic titrators in the analytical and physical chemistry laboratories. A diode-laser-based automated timing interface for rapid measurement of liquid viscosity. Diffusion of CsCL in aqueous glycerol measured by laser refraction. Excited state lifetimes and bimolecular quenching of iodine vapor. The reaction of a food colorant with sodium hypochlorite. A simple electrochemical approach to heterogeneous reaction kinetics. A student experiment in non-isothermal chemical kinetics.


Périodique
Journal of Chemical Education Volume 75, Number 10, 10/1998.
Résumé : Synthesis of complex natural products as a vehicle for student-centered problem-based learning. Synthesis of aspirin. Production, extraction and qualitative testing of penicillin : a biochemistry experiment for health science chemistry courses. Synthesis of NMP, a fluoxetine (Pozac) precursor, in the introductory organic laboratory. A modified synthesis of the insect repellent DEET. A simplified method for the microscale extraction of pigments from spinach. A simple method to demonstrate the enzymatic production of hydrogen from sugar. Enzyme-linked antibodies : a laboratory introduction to the ELISA. Immobilized lactase in the biochemistry laboratory. Some aspects of yeast anaerobic metabolism examined by the inhibition of pyruvate decarboxylase. A 19F NMR study of enzyme activity. Hetero diels-alder reaction with aqueous glyoxylic acid : an experiment in organic synthesisand 2-D NMR analysis for advanced undergraduate students. Determination of the enantiomeric purity of commercialL-[U-14C]valine : an experiment utilizing reversed-phase thin-layer chromatography and liquid scintillation counting. Use of theoretical chemistry to explain baeyer-villiger oxidations of methoxy aromatic aldehydes. Organic reactions involving bromine : puzzles for the organic laboratory. Characterization of meteastable products from the reaction of copper(II) bromide and tetramethylthylthiuram sulfide : an undergraduate project involving two unknown metal complexes and an unexpected pattern of reactivity. Crystallographic structure determination : an experiment for organic analysis and other nontraditional venues. A simple transparent fume hood.


Périodique
Journal of Chemical Education Volume 75, Number 11, 11/1998.
Résumé : Do new pennies lose their shell hypothesis testing in the sophomore analytical chemistry laboratory. Practical origami in the microscale organic lab. Microscale synthesis of UO2Cl2(OPPh3)2. The octahedral-square-planar transition of nickel chelates. Resolution of trans-cyclohexane-1 2-diamine qnd determination of the enantiopurity using chiral solid-phase HPLC techniques and polarimetry. Determination of chloride concentration using capillary zone electrophoresis. A fluorescence study of hybrid and nonhybrid sol-gel systems. Phase-transfer catalytic reactions. Cometary spectroscopy for advanced undergraduates. Use of the vreeland spectroscope in the quantum chemistry laboratory. Use of a reliable homemade dilatometer to study the kinetics of the radical chain polymerization of PMMA.


Périodique
Journal of Chemical Education Volume 75, Number 12, 12/1998.
Résumé : Identifying bottled water : a problem-solving exercice in chemical identification. Determination of nitrate and nitrite in water by capillary electrophoresis. Synthesis and separation of a diastereomeric sulfonium ion by capillary zone electrophoresis. Chemical analysis of an endangered conifer. A new GC-MS experiment for the undergraduate istrumental analysis laboratory in environmental chemistry : methyl-t-butyl ether and benzene in gasoline. Chromatography, absorption and fluorescence : a new instrumental analysis experiment on the measurement of polycyclic aromatic hydrocarbons in cigratte smoke. Inhibition of sulfite oxidation by phnols : screening antioxidant behavior with a clark oxygen sensor. Sulfides in the anaerobic environment : the determination of hydrogen sulfide and acid-soluble metallic sulfides in sea-floor sediment. The distribution coefficient of atrazine with illinois soils. A precise method for determining the CO2 content of carbonate materials. Quantitative HPLC analysis of a psychotherapeutic medication : simultaneous determination of amitriptyline hydrochloride and perphenazine. Rapid, sensitive, enzyme-immunodotting assay for detecting cow milk adulteration in sheep milk. A thermodynamic study of azide binding to myoglobin. Reduction of 2 6-dimethylcyclohexanone with sodium borohydride revisited : a correction on the structural assignments of the products and the discovery of a solvent effect. The spontaneous hydrolysis of methyl chloroformate : a physiocal chemistry experiment for teachnig techniques in chemical kinetics. The effect of salts and nonelectrolytes on the solubility of potassium bitartrate. Microscale thermite reaction. The pechmann reaction. Conformation interchange in nuclear magnetic resonance spectroscopy. Rotational barriers in push-pull ethylenes : an advanced physical-organic project includind 2D EXSY and computational chemistry. Recycling solvent mixtures of ethyl acetate and hexanes.


Périodique
Journal of Chemical Education Volume 76, Number 01, 01/1999.
Résumé : Vial organic. Micropreparation of [RuH2(P(C6h5)3)4] : a transition metal hybride compound. A microscale synthesis of the diastereomers of 2,3 dibromosuccini acid. A multistep synthesis of 4-nitro 1-ethynylbenzene involving palladium catalysis conformational analysis acetal hydrolysis and oxidative decarbonylation. Side reactions in a grignard synthesis. A simple method for determining the absolute configuration of alpha mino acids. Use of protecting groups in carbohydrate chemistry. Inquiry based approach to a carbohydrate analysis experiment. The preparation of a fluorescent dye : a microscale TLC experiment. Chromatography. Laser-induced fluoresecence of lightsticks. Comparison of analytical methods : direct emission versus first-derivative fluorometric methods for quinine determination in tonic waters. The ionization energy of helium. Spectroscopy of simple molecules. Sweet chemistry. Determination of the critical micelle concentration of cationaic surfactants : an undergraduate experiment. The nernst equation : determination of equilibrium constants for complex ions of silver. Students construction of a gel-filled ag/agCl reference electrode for use in a potentiometric titration. Effect of sample size on sampling error : an experiment for introductory analytical chemistry.


Périodique
Journal of Chemical Education Volume 76, Number 02, 02/1999.
Résumé : Survey of binary azeotropes as physical chemistry laboratory experiments with attention to cost, safety and the environment. Design for a miniature portable fume hood. An introductory organic lab for the problam-solving lab approach. Teaching polymer science to third-year undergraduate chemistry students. An undergraduate experiment in polyester (PET) synthesis. Microscale synthesis and H NMR analysis of tetraphenylporphyrins. Pungency quantitation of hot pepper sauces using HPLC. Analysis of volatile fragrance and flavor compounds by headspace solid phase microextraction and GC-MS : an undergraduate instrumental analysis experiment. Student understanding of chromatography : a hands-on approach. Internal standard claculations in chromatography. Determination of surface coverage of an adsorbate on silica using FTIR spectroscopy.


Périodique
Journal of Chemical Education Volume 76, Number 03, 03/1999.
Résumé : Bridging native american culture and chemistry : gas chromatography experiments that examine native foods. A simplified method for finding the pK of an acid-base indicator by spectrophotometry. Variable path-lenght cells for discovery-based investigation of the beer-lambert law. Liver and onions : DNA extraction from animal and plant tissues. Ruthenium complexes with organic ligands : an advanced undergraduate inorganic / organometallic chemistry experiment. Synthesis of molybdenum-molybdenum quadruple bonds : a multistep advanced synthesis laboratory experiment. An easy experiment to compare factors affecting the reaction rate of structurally related compounds. Recombinant green fluorescent protein isoforms : exercices to integrate molecular biology, biochemistry and biophysical chemistry. Resonance energy transfer in peptides : a biophysical laboratory experiment. Determination of thermodynamic parameters of the cyclodextrin inclusion process : an undergraduate physical chemistry laboratory experiment. A practical integrated approach to supramolecular chemistry 1 : equilibria in inclusion phenomena. A practical integrated approach to supramolecular chemistry 2 : kinetics of inclusion phenomena.


Périodique
Journal of Chemical Education Volume 76, Number 04, 04/1999.
Résumé : A simple safe way to prepare halogens and study their visual properties at a technical secondary school. A safe simple halogenation experiment. The discovery oriented approach to organic chemistry 1. Nitration of unknown organic compounds : an exercice in H NMR and C NMR spectroscopy for sophomore organic laboratories. Replication and compression of bulk and surface : structures with polydimethylsiloxane elastomer. In introductory experience for physical chemistry : Victor Meyer revisited.


Périodique
Journal of Chemical Education Volume 76, Number 05, 05/1999.
Résumé : Pressure and stoichiometry. Discovering a change in equilibrium constant with change in ionic strength. The o-phenylenediamine horseradish peroxidase system : enzyme kinetics in the general chemistry laboratory. Kinetics of papain.Examining the rate of renaturation for genomic DNA isolated from E. coli. Synthesis and purification of a hammerhead robozyme and fluorescein labeled RNA substrate. Monitoring hammerhead robozyme catalysed cleavage with a fluorescein labeled substrate : effects of magnesium ions and antibiotic inhibitors. Employing NMR spectroscopy to evaluate transmission of electronic effects in 4 substituted chalcones. Harpless asymmetric dihydroxylation : effect of alkene structure on rates and selectivity. Synthesis of a 7 oxanorbornene derivative. Ring openong metathesis poymerization with a well defined ruthenium carbene compex. An interfermetric study of epoxy polymerization kinetics. Equipment for a low cost study of the naphthalene biphenyl phase diagram.


Périodique
Journal of Chemical Education Volume 76, Number 06, 06/1999.
Résumé : Capilary electrophoretic quantitative analysis of anions in drinking water. Separation and quantification of simple ions by capilary zone electrophoresis. Micellor electrokinetic capilary chromatography in the undergraduate curriculum. Separation and identification of the amino acid residues in an unknown dipeptide using FMOC derivatization. A puzzling alcohol dehydration reaction solved by GC-MS analisis. Preparation and identification of benzoic acids and benzamides. A simple and convenient method for generation and NMR observation of stable carbanions. Optimizing signal to noise ratio in flame atomic absorption spectrphotometry using sequential simplex optimization. The electronic absorption spectrum of molecular iodine. The lodine spectrum : a lokk at an old topic.


Périodique
Journal of Chemical Education Volume 76, Number 07, 07/1999.
Résumé : Preparation and properties of aon aqueous ferrofluid. Kinetics and thermodynamics of Au colloid monolayer self assembly. Ion flotation. CCatalytic oxidation of sulfur dioxide by activated carbon. Quantitative determination of PAHs in diesel engine exhausts by GC-MS. Quantitative protein determination from cellulase acetate strip electrophoresis. Electropolymerized conducting polymers as glucose sensors. Kineticof methylene blue reduction by ascorbic acid. a facile oxidation of alcohols using pyridinium chlorochromate / Silica gel. A spectrophotometric method for quantitative determination of bromine using tris(2-carboxyethyl) phosphine. Teaching catalytic antibodies to undergraduate students : an organic chemistry lab experiment. An integrated molecular modeling and melting point experiment for the organic chemistry laboratory. Molecular modeling as an aid to understanding stereoselectivity. A microscale vacuum distilation apparatus for simple separations.


Périodique
Journal of Chemical Education Volume 76, Number 08, 08/1999.
Résumé : An inexpensive microscale method for measuring vapor pressure, associated thermodynamic variables, and molecular weight. The development of a microscale continuous hot solvent extractor. Qualitative analysis in the beginning organic laboratory. The discovery oriented approch to organic chemistry 2. Selectivity in alcohol oxidation : an exercice in h NMR spectroscopy for sophomore organic laboratoty; Problem based learning in undergraduate education : A sophomore chemistry laboratory. A research based sophomore organic chemistry laboratory. A project oriented biochemistry laboratory course.


Périodique
Journal of Chemical Education Volume 76, Number 09, 09/1999.
Résumé : The incorporation of a single-crystal X-ray diffraction experiment into the undergraduate physical chemistry laboratory. A fast and relibale method for packing capillaries for X-ray powder diffraction analysis. Electrophilic substitution in naphtalene : kinetic vs thermodynamic control. Chemistry of natural amino acids : a surprising "one-pot four-step" conversion of polyfunctional enones into cyclic imines. Microscale synthesis of tributyl arsenite. CO2 potentiometric determination and electrode construction a hands-on approach. Determination of anionic surfactants using atomic absoption spectrometry and anodic stripping voltammetry. Overcoming angular dependency when teaching light scattering using a spectrofluorometer : the molecular weights of latex beads. Are fluorescence quantum yields so tricky to measure? a demonstration using familiar stationery products. A simple device to demonstrate the principles of fluorometry. The balmer spectrum of hydrogen : an old experiment with a new twist. A procedure to obtain the effective nuclear charge from the atomic spectrum of sodium. Raman spectroscopy of symmetric oxyanions. An interactive dry lab introduction to vibrational raman spectroscopy using carbon tetrachloride. Determination of equilibrium constants of metal complexes from spectrophotometric measurementss : an undergraduate laboratory experiment. Spectrophotometric of myoglobin stability by visible spectroscopy. Photochemistry without light : oxidation of rubrene in a microemulsion with a chemicalsource of singlet molecular oxygen. Geometry of benzene from the infrared spectrum.


Périodique
Journal of Chemical Education Volume 76, Number 10, 10/1999.
Résumé : The softening of hard water and complexometric titrations : an undergraduate experiment. Ascorbic acid as a standard for iodometric titrations : an analytical experiment for general chemistry. Electrochemical regenaration of a spent oxidizing solution : example of a clean chemical process. Chromatin isolation and DNA sequence analysis in large undergraduate laboratory sections. Grignard reactions in "wet" ether. A simple supplementary offset device for data acquisition systems.


Périodique
Journal of Chemical Education Volume 76, Number 11, 11/1999.
Résumé : Lightstick kinetics. A simple experiment for ion migration. The enthalpy of decomposition of hydrogen peroxide : a general chemistry experiment on reaction mechanism. Synthetic finger nails as a fire hazard in the chemistry laboratory. The preparation of a UV-light-absorbing polymer : a project-oriented laboratory experiment for the introductory organic chemistry curriculum. "New" compounds from old plastics : recycling PET plastics via depolymerization an activity for the undergraduate organic lab. Effect of plasticizers on the properties of polystyrene films. Basic rheology of polymer melts : an introductory polymer science experiment. Reticulation study and molding of unsaturated polyester composites. Teaching light scattering to exemplifiy and reinforce basic principles. A colorful ion exchange experiment. The solubilituy of ionic solids and molecular liquids. Demonstrating chemical and analytical concepts in the undergraduate laboratory using capillary electrophoresis and micellar electrokinetic chromatography. Antacids revisited with modern chemical instruments : GCMS, AAS and CCT. The separation and identification of some brominated and chlorinated compounds by GC/MS : an advanced undergraduate laboratory. Reflectance spectroscopy using wine bottle glass : an undergraduate experiment. Selection of an analysis wavelength : an interesting example involving solvatochronism and the zwitterionic dimroth-reichardt's beatine ET-30 dye. The preparation of lidocaine. A novel target synthesis laboratory for students. Parallel combinatorial esterification : a simple experiment for use in the second-semester organic chemistry laboratory. A structure-function study of RecA : the structural basis for ATP specificity in the strand exchange reaction. An in vivo C NMR analysis of the anaerobic yeast metabloism of 1-13C-glucose.


Périodique
Journal of Chemical Education Volume 76, Number 12, 12/1999.
Résumé : Pesticides in drinking water : project-based learning within the introductory chemistry curriculum. Removal of heavy metals from water : an environmentally significant atomic absorption spectometry experiment. Remediation of water contaminated with an azo dye : an undergraduate laboratory experiment utilizing an inexpensive photocatalytic reactor. Microscale chemistry and green chemistry : complementary pedagogies. Microscale transformations of some lead compounds : a cycle for minimizing the production of wastes. Colors to dye for : preparation of natural dyes. A brine shrimp bioassay for measuring toxicity and remediation of chemicals. Separation of polyaromatic hydrocarbons using 2-dimensional thin-layer chromatography : an environmental chemistry experiment. Chemical analysis of soils : an environment chemistry laboratory for undergraduate science majors. Analysis of semivolatile organic compounds in fuels using gas chromatography-mass spectrometry. Laboratory application and demonstration of automotive oxygen sensors. An undergraduate fields experiment for measuring exposure to environmental tobacco smoke in indoor environments. Greenhouse warming potentials from the infrared spectroscopy of atmospheric gases. Identifying softwoods and hardwoods by infrared spectroscopy. Chromatographic separations using solid-phase extraction cartridges : separation of wine phenolics. An alternative procedure for the glucose oxidase assay of glucose as applied to the lactase activity assay. A simple and efficient ozone generator. An experiment to demonstrate how a catalyst affects the rate of a reaction. Synthesis of derivatives of (1R)-(-)- and (1S)-(+)-10 camphorsulfonic acid. The hofmann rearrangement using household bleach : synthesis of 3-nitroaniline.


Périodique
Journal of Chemical Education Volume 77, Number 01, 01/2000.
Résumé : A surface chemistry experiment using an inexpensive contact angle goniometer. Contact angle giometry as a tool for surface tension measurements of solids. Using zisman plot method : a physicl chemistry experiment. Molecular photography : identification of functional groups using scanning tunneling microscopy. Luminescence quenching in microemulsion studies. Using sol gel chemistry to synthesize a material with properties suited for chemical sensing development and implementation of a materials science experiment for the undergraduate curricumum. The discovery oriented aproach to organic chemistry.3. Rearrangement of cisand trans-stibene oxides with baron trifluoride etherate . An exercice in H NMR spectroscopy for sophomore organic laboratories. tudent determined values for the clculation of chemical shifts of methylene protons in different chemical environement. Quantitative determination of methycyclhexanone mixture using N NMR spectroscopy. Preparation of nido-carborane derivatives : variation of the P[
(H)NMR pattern by changing the coordinating ligand. Examination of electron transfer self exchange rates using NMR line broadening techniques. Reaction of morpholine with t-butyl acetoacetate : a study in kinetic vs thermodynamic control, product identification and molecular modeling. Introduction to homogeneous catalysis : carbon-carbon bond formation catalyzed by a defined palladium complex. Detrermination of the fundamental electronic charge via the electrolysis of water; Easy to make Ag/AgCI reference electrode. A simple hanging mercury drop electrode. A simple numerical procedure for the simulations of "lifelike" linear sweep volammograms.


Périodique
Journal of Chemical Education Volume 77, Number 02, 02/2000.
Résumé : A rewarding experience. Metallurgy in the laboratory : preparation of pure antimony. Inexpensive digital monitoring of signals from a spectronic 20 spectrophotometer. Inexpensive pipet or buret jar and washer. Calculator based instrumentation : the design of a digital temperature probe based on 12C technology. A low cost device for automatic photometric titrations. An inexpensive commercially available analog to digital converter. Undergraduate separation utilizing flash chromatography. A problem solving approach to chromatography in the biochemistry lab. Determination of the scoville heat value for hot sauces and chilies : an HPLC experiment. Dipeptide sequence determination : analyzing phenylthiohydantoin amino acids by HPLC. A simple secondary amine synthesis : reductive amination using sodium triacetoxyborohydride. Catalytic asymmetric epoxidation using a fructose derived catalyst.


Périodique
Journal of Chemical Education Volume 77, Number 03, 03/2000.
Résumé : Experiments with aspirin. Microwave irradiation reaction : synthesis of analgesic drugs. Synthesis of the sweetener dulcin from the analgesic acetaminophen. Isolation of curcumin from tumeric. Isolation trans-anethole from anise seeds and elucidating its structure : a project utilizing one and two dimensional NMR spectrometry. Probing the active site of yeast alcohol dehydrogenase through microscaleyeast mediated reductions of acetophenone and acetylpyridines : a collaborative and reseach based advanced bioorganic chemistry laboratory project. identification of pharmaceuticals via computer aided thin layer chromatography. Rapid simple quantitation in thin layer chromatography using a flatbed scanner. A convenient and highly specific western blot experiment for introductory biochemistry. laboratory exercice for photochemistry and photobiology :production of hydrogen peroxide. An analytical laboratory experiment in error analysis : repeated determination of glucose using commercial glucometers. Thermal denaturation of proteins studied by
UV spectroscopy. Multicomponent reactions. Dediazoniations in water. organic chemistry in capillaries. A simple laboratory constructed automatic titrator. An inexpensive convenient press for KBr and Csl Pellets in infrared studies. Micelles in the physical chemistry laboratory : diffusion coeficients and half wave potentials of ferrocene. Liquid-liquid equilibria : verification of the lever rule. Molecular modeling to predict regioselectivity of hydration reactions.


Périodique
Journal of Chemical Education Volume 77, Number 04, 04/2000.
Résumé : Chemistry and flatulence : an introductory enzyme experiment. Gaseous ion fragmentation mechanisms in chlorobenzenes by GC/MS and GC/MS/MS. Complete analysis of a biologigically active tetrapeptide : a project utilizing thin moyer chromatography and mass spectrometry. Reaction of dibenzolethylene with hydriodic acid. Kinetics of reduction of toluidine blue with sulfite. Kinetic salt effect in elucidation of mechanism. Preparation and analysis of multiple hydrates of simple salts. Epoxide chemistry guided inquiry experiment emphasizing struture determination and mechanism.


Périodique
Journal of Chemical Education Volume 77, Number 05, 05/2000.
Résumé : A comparative study of microscale and standard burets. Micelles in the physical chemistry laboratory. Kinetics of hydrolis of 5,5'-dithiobis-(2-nitrobenzoate) in basic solution. Drye-ice bath based onethylene glycol mixture. Self assembly of microporous thiogermanate frameworks. The second order roman spectrum of C diamond : an introduction to vibrational spectroscopy of the solid state. Visible absorption spectroscopy and structure of cyanine dimers in aqueous solution. Photoacoustic calorimetry.


Périodique
Journal of Chemical Education Volume 77, Number 06, 06/2000.
Résumé : Separation and quantification of preservatives using ion pair HPLC and CZE : an extended investigation of separation mechanism. Analysis of diet tonic water using capillary electrophoresis : an undergraduate instrumental analysis experiment. Studying thermally induced chemical and physical transformations in common synthetic polymers : a laboratory project. Measuring soil phosphates using ion-exchange resins : a final project for freshman chemistry. The oxidation of primary alcohols to esters : three related investigative experiments. Enantiomeric and diastereomeric relationships : a practical approach. Effective, safe and inexpensive microscale ultrasonic setup for teaching and research laboratories. The heck reaction : a microscale synthesis using a palladium catalyst. Microscale synthesis of hexaamminechromium(III) nitrate using liquid ammonia generated in the laboratory.


Périodique
Journal of Chemical Education Volume 77, Number 07, 07/2000.
Résumé : The discovery approach to NMR : development of chemical-chift additivity tables and application to product identification. Proton NMR studies of the conformation of an octapeptide : an NMR exercice for biophysical chemistry. Elucidation of molecular structure using NMR long-range coupling : determination of the single isomer formed in a regiospecific reaction. Photochemistry of chloropicrin : a physical chemistry project. Chemical actinometry : using o-nitrobenzaldehyde to measure light intensity in photochemical experiments. A practical procedure for the solid-phase synthesis of azo compounds in the undergraduate organic organic laboratory. The synthesis and analysis of ammine complexes of copper and silver sulfate. an undergraduate laboratory project.


Périodique
Journal of Chemical Education Volume 77, Number 08, 08/2000.
Résumé : Student-directed learning in the organic chemistry laboratory. Determination of Ksp' for the dissolution of calcium hydroxide in water : a general chemistry laboratory. An inexpensive gradient maker for the biochemistry laboratory. Kinetic isotope effect in the chromic acid oxidation of secondary alcohols. Trisethylenediaminecobalt(III) chloride sulfate as a subject material for widely different chemistry laboratory courses. Evaporation kinetics in short-chain alcohols by optical interference. ISE analysis of hydrogen sulfide in cigarette smoke.


Périodique
Journal of Chemical Education Volume 77, Number 09, 09/2000.
Résumé : Potentiometric determination of CO2 concentration in the gas phase : applications in different laboratory activities. Theoritical concepts and applications of a rotating disk electrode. Determination of the real surface area of Pt electrodes by hydrogen adsorption using cyclic voltammetry. Surface oxidation kinetics : a scanning tunneling microscopy experiment. Understanding the origin of luminescence in porous silicon : an undergraduate solid-state chemistry experiment. Preparation of a surface-oriented liquid crystal : an experiment for the undergraduate organic chemistry laboratory. Solid-state synthesis of a thermochromic compound. Preparation of spinel-type cathode materials from carbonate/oxalate powder mixtures : a solid-state experiment for advanced undergraduate inorganic chemistry laboratory. Gas-phase kinetics of O3+H2C=Cll2. The distribution constant of iodine between aqueous and organic phases. Getting students to wear safety goggles. An easy and fast experiment for the determination of the equilibrium constants of an acid-base pair, free and complexed with a molecular receptor. Acid-base titration of (S)-aspartic acid : a circular dichroism spectrophotometry experiment.


Périodique
Journal of Chemical Education Volume 77, Number 10, 10/2000.
Résumé : Implementation of traditional and real-world cooperative learning techniques in quantitative analysis including near infrared spectroscopy for analysis of live fish. Liquid chromatographic determination of am,esic shellfish poison in mussels. Atomic absorption spectroscopy of calcium in foodstuffs in non-science-major courses. Candies to dye for : cooperative, open-ended student activities to promote understanding of electrophoretic fractionation. Determination of aspartame and caffeine in carbonated beverages utilizing electrospray ionization-mass spectrometry. Enzymatic spectrophotometric reaction rate determination of glucose in fruit drinks and carbonated beverages : an analytical chemistry laboratory experiment for food science-oriented students. Determination of the active principle in a syrup by spectrophotometry and principal component regression analysis : an advanced undergraduate experiment involving chemometrics. Determining the EDTA content in a consumer shower cleaner : an introductory chemistry laboratory experiment. Analysis of common household cleaner-disinfectants by capillary electrophoresis. Time-dependent changes in a shampoo bubble. Teflon tape - the leaky buret remedy. Bromination, elimination and polymerization : a 3-step sequence for the preparation of polystyrene from ethylbenzene. Spectroscopy of flames : luminescence spectra of reactive intermediates. Displacement of the benzene solvent molecule from Cr(CO)5(benzene) by piperidine : a laser flash photolysis experiment. A cyclic voltammetry experiment illustrating redox potentials, equilibrium constants and subsitution reactions in coordination chemistry. In praise of latex gloves.


Périodique
Journal of Chemical Education Volume 77, Number 11, 11/2000.
Résumé : A simple protein purification and folding experiment for general chemistry laboratory. A biochemical study of noncovalent forces in proteins using phycocyanin from spirulina. Immunoprecipitation of serum albumin with protein A-sepharose : a biochemistry laboratory experiment. Identification and quantitation of plasma membrane components : a biochemical experiment for lipid investigations. A biochemical GC-MS applications for the organic chemistry laboratory : determination of fatty acid composition of arabidopsis thaliana lipids. Thermodynamics of DNA duplex formation : a biophysical chemistry laboratory experiment. DNA topology analysis in the undergraduate biochemistry laboratory. Cyclization of the monoterpene citronellal to isopulegol : biomimetic natural product synthesis. A ten-dollar stirring device for the microscale laboratory. The application of electrodialysis to desalting an amino acid solution. A short, one-pot synthesis of bupropion (zyban, wellbutrin). Ultramicro-boiling-point determination a modification. A microscale oxidation puzzle. Visible aromatic electronic effects using a series of substitutes copper phthalocyanines. A phthalocyanine synthesis group project for general chemistry. Teaching sample preparation in the undergraduate laboratory. It says in the books that ethanolburns with a cool flame. An EPR experiment for the undergraduate physical chemistry laboratory.


Périodique
Journal of Chemical Education Volume 77, Number 12, 12/2000.
Résumé : Applications of a US EPA-approved method for fluoride determination in an environmental chemistry laboratory : fluoride detection in drinking water. Hand-held conductivity meter and probe for small volumes and field work. Fizzy drinks : stoichiometry you can taste. Turbidimetric analysis of water and wastewater using a spectrofluorimeter. An undergraduate experiment for the measurement of trace metals in core sediments by ICP-AES and GFAAS. Quantitaive analysis non-absorbing cations in soil samples by high-performance capillary electrophoresis : an experiment for undergraduate instrumental analysis laboratory. Fluorescence measurement of pyrene wall adsorption and pyrene association with humic acids : an experiment for physical chemistry or instrumental methods. ELISA and GC-MS as teaching tools in the undergraduate environmental analytical chemistry laboratory. The determination of ergosterol in environmental samples : an interdisciplinary project involving techniques of analytical and organic chemistry. The role of automated instrumentation in undergraduate chemistry. Green chemistry in the organic teachning laboratory : an environmentally benign synthesis of adipic acid. The label didn't say not to do it. Hot chili peppers : extraction, cleanup and measurement of capsaisin. Use of a dynamic headspace GC-MS method for the study of volatile organic compounds in polyethylene packaging : an undergraduate experiment in polyler analysis. Vibrational spectra and heat capacity of methane and the speed of sound. Infrared spectrum and group theoretical analysis of the vibrational modes of carbonyl sulfide.


Périodique
Journal of Chemical Education Volume 78, Number 01, 01/2001.
Résumé : Solving a mock arsenic-poisoning case using atomic spectroscopy. Modification of small-scale one-pot reactions to an inquiry-based laboratory exercise. Suggested modifications to a distillation-free solvent purification system. An efficient and inexpensive apparatus for the hot filtration. Organic-solvent-free phase-transfer oxidation of alcohols using hydrogen peroxide. Determination of the regiochemistry of distributed arenes generated by addition of a carbanion to the (n6-anisole)CR(CO)3 complex. Synthesis and spectroscopic analysis of a cyclic acetal : a dehydration performed in aqueous solution. Synthesis of methyl 2,3,5-tri-o-benzoyl-arabinofuranoside in the organic laboratory. Synthesis of a partially protected azidodeoxy sugar : a project suitable for the advanced undergraduate organic chemistry laboratory. The discover-oriented approach to organic chemistry 4. epoxidation of p-methoxy-trans-b-methylstyrene : an exercice in NMR and IR spectroscopy for sophomore organic laboratories. The discovery-oriented approach to organic chemistry 5. stereochemistry of E2 elimination of cis- and trans-2-methylcyclohexyl tosylate. Determination of the position of the conformational equilibrium of a trans1,2-disubsituted cyclohexane by NMR spectroscopy : an experiment in physical organic chemistry for undergraduate students. Linkage isomerization by two-dimensional nuclear magnetic resonance spectroscopy : an undergraduate inorgnaic laboratory experiment. Synthesis of [RuCl2(dppb)(PPh3)] and identification of the cis- and trans-[RuCl2(dppb)(phen)] geometrical isomers via NMR spectroscopy : an undergraduate experiment for inorganic chemistry. Indirect potentiometric ,titration of Fe(III) with Ce(IV) by gran's method.


Périodique
Journal of Chemical Education Volume 78, Number 02, 02/2001.
Résumé : Drug distribution : a guided-inquiry laboratory experiment in coupled homogeneous and heterogeneous equilibria. The dibenzalacetone reaction revisited. Development of a resaerch-oriented inorganic chemistry laboratory course. Ruthenium vinylidene and acetylide complexes : an advanced undergraduate multi-technique inorganic / organometallic chemistry experiment. The synthesis and analysis of copper(I) iodide : a first year laboratory project. Determination of flavonoids in wine by high performance liquid chromatography. A simple laboratory experiment for the determination of absolute zero. Exploring phase diagrams using supercritical fluids : an undergraduate physical chemistry laboratory. Influence of dielectric constant on the spectral bahevior of pinacyanol : a spectrophotometric experiment for physical chemistry. A compurter-controlled bipolar pulse conductivity apparatus.


Périodique
Journal of Chemical Education Volume 78, Number 03, 03/2001.
Résumé : An alternative to mercury thermometers. Surface tension determination through capillary rise and laser diffraction patterns. Contact angles of aqueous solutions on copper surfaces bearing self-assembled monolayers. A simplified method for the determination of critical micelle concentration. Micelles in the physical /analytical chemistry laboratory, acid dissociation of neutral red indicator. Sampling techniques for organic solids in IR spectroscopy : thin solid films as the method of choice in teaching laboratories. Using a diode laser pointer to count drops and automate titration systems. Application of light emitting diodes to chemical analysis : determination of copper in water. Ion chromatography : analysis of ions in pond waters. Safe and efficient flash chromatography equipment for the research/teaching lab. What factors affect the separation of substances using thin-layer chromatography ? From GC to the NMR : a simple semipreparative gas chromatography collection method using NMR tubes. A preparative TLC applicator. A strategy for incorporating hands-on-GC-MS into the general chemistry lecture and laboratory courses. Determining the percent water in organic solvents using the zwitterionic dimroth-reichardt betaine ET-30 dye : an industrially relevant application of a previously published laboratory experiment.


Périodique
Journal of Chemical Education Volume 78, Number 04, 04/2001.
Résumé : Sructure and content of some primary batteries. Floating plastics : an initial chemistry laboratory experience. Dissolution kinetics of solids : application with spherical candy. Simulating how a virus spreads through a population : an introduction to acid-base chemistry in the organic chemistry laboratory. Class projects in physical organic chemistry : the hammet equation. The oxidation of alkylbenzenes : using data pooling in the organic laboratory to illustrate research in organic chemistry. Diastereoselective synthesis of (+/-)-1,2diphenyl-1,2propanediol : a discovery-based grignard reaction suitable for a large organic lab course. Determination of lipophilicity constants of sulfonamide subsituents. Isolating friedelin from cork and reducing it to friedelinol and epifriedelinol : a project involving NMR spectrometry and molecular modeling. Molecular mechanics and variable-temperature H NMR studies on N,N diethyl-m-toluamide : an undergraduate NMR and molecular modeling experiment. An indexed combinatorial library : the synthesis and testing of insect repellents. Small-scale filtration using a modified plastic syringe. Controlled/living radical polymerization in the undergraduate laboratories : 1 using ATRP to prepare block and statistical copolymers of n-butyl acrylate and styrene. Controlled/living radical polymerization in the undergraduate laboratories : 2 using ATRP in limited amounts of air to prepare block and statistical copolymers of n-butyl acrylate and styrene.


Périodique
Journal of Chemical Education Volume 78, Number 05, 05/2001.
Résumé : Build a simple polarimeter. An experiment on photochromism and kinetics for the undergraduate laboratory. A simple solution for leaking polarimeter cells. Putting UV-sensitive beads to the test. An easy and versatile experiment to demonstrate solvent polarity using solvatochromic dyes. Analysis of an oxygen bleach : a redox titration lab. A useful system for micoscale and semi-microscale fractional distillation of air-sensitive substances with high boiling points. Synthesis of substitued butenolides : an undergraduate organic laboratory experiment utilizing two 3-step preparatory sequences. Computer simulation of electronic circuits used in chemical instrumentation. Ruthenium(II)-dppm coordination chemistry : an advanced inorganic miniproject. Metal complexes of trifluoropentanedione : an experiment for the general chemistry laboratory. Use of EPR spectroscopy in elucidating electronic structures of paramagnetic transition metal complexes. Determination of the magnetic moments of transition metal complexes using rare earth magnets.


Périodique
Journal of Chemical Education Volume 78, Number 06, 06/2001.
Résumé : Solar photocatalytic destruction of p-nitrophenol : a pedagogical use of lab wastes. Laboratory experiments on electrochemical remediation of the environment : part 5 indirect H2S remediation. An alternative one-step procedure for the conversion of piperonal to piperonylonitrile. Isolation and spectral analysis of naturally occuring thiarubrine A. Combinatorial synthesis and discovery of an antibiotic compound : an experiment suitable for high school and undergraduate laboratories. Simultaneous determination of the ionization constant and the solubility of sparingly soluble drug substances : a physical chemistry experiment. Bioanalytical experiments for the undergraduate laboratory ! monitoring glucose in sports drinks. HPLC determination of taurine in sports drinks. UV-visible first-derivative spectrophotometry applied to an analysis of a vitamin mixture.


Périodique
Journal of Chemical Education Volume 78, Number 10, 10/2001.
Résumé : An introduction to the scientific process : preparation of poly(vinyl acetate) glue. The purification of water by freeze-thaw or zone melting. Synthesis and analysis of a solvatochromic dye1-(p dimethylaminophenyl)-2-nitroethylene : an advanced undergraduate laboratory experiment. An improved preparation of glucopyranose pentaacetate. Mass spectral fragmentation patterns of deuterated butyl and ethyl acetates : an easy microscale isotopic labelling experiment. The combined effects of pH and percent methanol on the HPLC separation of benzoic acid and phenol. Preparation of buffers : an experiment for quantitative analysis laboratory. Moisture analysis in lotion by karl fischer coulometry : an experiment for introductory analytical chemistry. Tablet analysis using gravimetric dilutions. Analysis of zinc tablets : an extension to a stoichiometry experiment.


Périodique
Journal of Chemical Education Volume 78, Number 11, 11/2001.
Résumé : Acid-base indicators : a new lokk at an old topic. Using guided inquiry to study optical activity and optical rotatory dispersion in a cross-disciplinary chemistry lab. Applied electronics : construction of a simple spectrophotometer. New paper from newspaper. The construction of the UCSC econo-box : an inexpensive yet effective glove box. An inexpensive water jacket for a polarimeter tube. The hydrogenation of cyclodecene by lithium naphthalenide and nickel chloride dihydrate. Synthesis and self-assembly of the "tennis ball" dimer and subsequent encapsulation of methane : an advanced organic chemistry laboratory experiment. Network complexes of copper(I) halides. An alternative confirmatory test for silver ion in qualitative analysis. Using capillary electrophoresis to determine the purity of acetylsalicylic acid synthesized in the undergraduate laboratory. Teaching experimental design using an exercice in protein fractionation. Biocatalytic lactone generation in genetically engineered excheridia coli and identification of products by gas chromatography-mass spectroscopy. The effect of organic solvents and other parameters on trypsin-catalyzed hydrolysis of n-benzoyls-arginine -p-nitroanilde : a project-oriented biochemical experiment. Micellar effects on the spontaneous hydrolysis of phenyl chloroformate : a kinetic experiment for the physical chemistry laboratory.


Périodique
Journal of Chemical Education Volume 78, Number 12, 12/2001.
Résumé : A discovery-based experiment illustrating how iron metal is used to remediate contaminated groundwater. LEDs are diodes. Cigarette smoke analysis using an inexpensive gas-phase IR cell. Preparation and use of a room-temperature catalytic converter. Recovery and reutilization of waste matter from coffee preparation : an experiment for envoronmental science courses. Determination of free time in clinker and cement by lodometry : an undergraduate experiment in redox titrimetry. Raman spectroscopy with a fiber-optic probe and multichannel detection. Preparation of a d-glucose-derived alkene : an E2 reaction for the undergraduate organic chemistry laboratory. A simple preparative method to evluate total UV protection by commercial sunscreens.


Périodique
Journal of Chemical Education Volume 79, Number 01, 01/2002.
Résumé : Using latex elastomer to illustrate Euler's chain relationship. Synthesis and characterization of a hyperbranched copolymer. Solid phase organic synthesis and combinatorial chemistry : a laboratory preparation of oligopeptides. Introducing Freshman students to the pratice of solid phase synthesis. Modeling the drug discovery process : the isolation and bilogical testing of eugenol from the clove oil. The isolation of rubber from milkweed leaves. Soap from nutmeg : an integrated introductory organic chemistry. Diastereoselective synthesis of a strawberry flavoring agent by epoxidation of ethyl trans beta methylcinnamate. Identification of flavor components in perfumes by headspace solid phase microextraction and gas chromatography mass spectrmetry.Microscale determination in vitamin C by weight titrimetry. Coulometric titrations in wine samples : studies on the determination of S(IV) and the formation of adducts. Synthesis of quinolines and their characterization by 2 D NMR spectroscopy. Witting reaction : the synthesis of trans 9(2-phenylethenyl) anthracene revisited. Organometallic mediated organic synthesis. The binding constant for complexation of bilirubin to bovine serum albumin. Using the asymmetric stretch band of atmospheric CO2 to obtain the C=O baned length.


Périodique
Journal of Chemical Education Volume 79, Number 02, 02/2002.
Résumé : Chemical vapor deposition of carbon nanotubes. An experiment in materials chemistry. Chemical analysis using scaning force microscopy. The poisson distribution and single molecule spectroscopy. Rare gas viscosities. Magnetic stirring with the stirring bar length exceeding the vessel diameter. The mechanism of aqueous hydrolysis of nitroderivatives of phenyl. Phenylmethanesulfonate. Use of N label in organic synthesis and spectroscopy : preparation of N labeled tert-butylamine. Mifroscale synthesis of a diphenylisoxazoline by a 1,3 dipolar cycloaddition. The electrophilic bromination of toluene : determination of the ortho, meta, and para ratios by quantitative FTIR spectrometry. Determination of the rotameric stability of 1,2 dihaloethanes using infrared spectroscopy. An ABMX spin system study : from experimental to calculated spectra.


Périodique
Journal of Chemical Education Volume 79, Number 03, 03/2002.
Résumé : The electrolytic recovery of copper from brass. A laboratory simulation of an industrial applicatiion of electrical energy. Integrating HPLC electrochemistry : a labVIEW based pulsed amperometric detection system. a simple student experiment for teaching surface electrochemistry : adsorption of polyoxometalate on graphite electrodes. Lego stichiometry. Quantifying meniscus forces with an electronic balance : direct measurement of liquid surface tension. The sisible spectrum of liquid oxygen in the general chemistry laboratoty. Two experiments illustrating the importance of sampling in a quantitative chemical analysis. ICP in the physical chemistry laboratory : determination of plasma temperature. A novel and innovative biochemistry laboratory : crystal growth of hen egg white lysozyme. Using infrared spectroscopy to investigate prtein structure. The cis-trans equilibrium of N acetyl proline. Experimental design and polyelectrolyte effects on ligand binding to nucleic acids.


Périodique
Journal of Chemical Education Volume 79, Number 04, 04/2002.
Résumé : A simple experiment for the determination of molecular weights of gases lighter than air. Using limiting-excess stoichiometry to introduce equilibrium calculations : a discrepant event laboratory activity involving precipitation reactions. Weigh this way. An organic puzzle using meldrum's acid. Carbohydrate analysis : can we control the ripening of bananas ? An after-dinner trick. Efficient separation of yolk from white in boiled chicken eggs leads to convenient extraction of biologically viable phosphatidylcholine lipids. The mechanism of the ritter reaction in combination with wagner-meerwein rearrangements : a cooperative learning experience. A copper-sulfate-based inorganic chemistry laboratory for first-year university students that teaches basic operations and concepts. Simple synthesis and characterization of several nickel catalyst precursors. 129Xe NMR of zeolite NaY in the inorganic chemistry laboratory. Experiments with tris(ethylenediamine)cobalt(III) compounds : 59Co NMR and the resolution of enantiomeric [Co(en)3]3+ ion and analysis by formation of diastereomeric ion pairs. Keto-enol tautomers in a carbonyl phosphonium salt. Tethering bottle caps. Two-photon ionization spectrometry of alkali atoms in flames. A smart-laser-based colorimeter.


Périodique
Journal of Chemical Education Volume 79, Number 05, 05/2002.
Résumé : Implementing temporary facilities for organic chemistry laboratory. A graduated cylinder colorimeter : an investigation of path lenght and the beer-lambert law. External standards or standard additions? selecting and validating a method of standardization. A new start to advanced analytical laboratory : comparison of the performance charactrictics of various instruments. Measurement of the index of refraction of solids by UV-vis spectroscopy. A simple apparatus for gravitational sedimentation. Rapid microdetermination of partial molar and excess molar volumes. A one-pot synthesis of m-terphenyls : a guided exploration of reaction chemistry, chromatograpy and spectroscopy : a miniproject for the advanced organic chemistry laboratory. Quantitative measurement of bromoform in swimming pool water using SPME with GC-MS : an undergraduate instrumental analysis experiment.


Périodique
Journal of Chemical Education Volume 79, Number 06, 06/2002.
Résumé : Microscale pH titrations using an automatic pipet. Hydrogen bonding NMR : a new look at the 2,4-pentanedione keto-enol tautomer experiment. An environmental chemistry laboratory for the determination of a distribution coefficient. Analytical problems associated with the analysis of metals in a simulated hazardous waste. Fractional distillation and GC analysis of hydrocarbon mixtures. Synthesis and characterization of a gasoline oxygenate, ethyl tert-butyl ether. Chiral compounds and green chelistry in undergraduate organic laboratories : reduction of a ketone by sodium borohtdride and baker's yeast. Aqueous-phase palladium-catalyzed coupling : a green chemistry laboratory experiment. Preparation of aniline derivatives : an advanced undergraduate laboratory experiment exploring catalytic and stoichiometric reaction methodologies.


Périodique
Journal of Chemical Education Volume 79, Number 07, 07/2002.
Résumé : An integration of chemistry, biology and physics : the interdisciplinary laboratory. Unknown gases : student-designed experiments in the introductory laboratory. A new glow on the chromatography of M&M candies. Alka seltzer fizzing determination of percent by mass of NaHCO3 in alka seltzer tablets : an undergraduate general chemistry experiment. Why do some batteries last longer than others? Applications of the sol-gel process using well-tested recipes. Environmentally responsive hydrogels. Experimental design and multiplexed modeling using titrimetry and spreadsheets. Partial molar volumes from refractive index measurements. Achieving absolute negative pressures in liquids : precipitation phenomena in solution.


Périodique
Journal of Chemical Education Volume 79, Number 08, 08/2002.
Résumé : Application of a datalogger in biosensing : a glucose biosensor. A structure-activity investigation of photosynthtic electron transport : an interdisciplinary experiment for the first-year laboratory. Rate law determination of everyday processes. Microscale chemistry in aplastic petri dish : preparation and chemical properties of chlorine gas. Determination of the empirical formula of a copper oxide salt using two different methods. Structure and nuclear magnetic resonance : an experiment for the general chemistry laboratory. 1H NMR measurement of the trans-cis photoisomerization of cinnamic acid derivatives. Simple measurement of magentic susceptibilly with a small permanent magnet and a top-loading electronic balance. A film canister colorimeter. Surface light scattering adapted to the advanced undergraduate laboratory.


Périodique
Journal of Chemical Education Volume 79, Number 09, 09/2002.
Résumé : Synthesis and characterization of nanocrystalline Y2O3:EU3+ phosphor : an upper-division inorganic chemistry laboratory. Measurement for a rainy day. A nonradioactive simulation of the viking mission labeled-release experiment : a search for evidence of life. A low-cost and timesaving microscale heater. Spectrophotometric determination of total sulfite in white wine samples using crude extracts from flowers. Elemental analysis of wisdom teeth by atomic spectroscopy using standard additions : an aundergraduate instrumental analysis laboratory exercice. Preparation and characterization of bayerite samples : use of diffuse reflectance infrared spectroscopy to monitor purification. Preparing students for research : synthesis of substitute chalcones as a comprehensive guided-inquiry experience.


Périodique
Journal of Chemical Education Volume 79, Number 10, 10/2002.
Résumé : Organic spectroscopy a captone experience. Microwave-assisted reflux in organometallic chemistry : synthesis and structural determination of molybdenum carbonyl complexes : an intermediate-level organometallic-inorganic experiment. Copper(III) dithiocarbamates : an undergraduate experimental project with unexpected challenges. Teaching experimental design using a GC-MS analysis of cocaine on money : a cross-disciplinary laboratory. Quantitative determination of nicotine and cotinine in urine and sputum using a combined SPME-GC/MS method. Cyclodextrin inclusion complexes with a solvatochromic fluorescent probe. Cost-effective spectroscopic instrumentation for the physical chemistry laboratory.


Périodique
Journal of Chemical Education Volume 79, Number 11, 11/2002.
Résumé : Triboluminescent crystals from the microwave oven. Analysis of selenium in brazil nuts by microwave digestion and fluorescence detection. Identification of yeast V-ATPase mutants by western blot analysis of whole cell lysates. Synthesis of a racemic ester and its lipase-catalyzed kinetic resolution. Synthesis of 4-methylumbellifer-7-yl-a-d-mannopyranoside : an introduction to modern glycosylation reactions. Synthesis and spectral and thermal properties of pyzarine-bridged coordination polymers of copper(II) nitrate : an experiment for advanced undergraduates. Signal-to-noise ration, signal processing and spectral information in the instrumental analysis laboratory. Through the looking glass. Small scale reactor for ultraviolet photochemistry.


Périodique
Journal of Chemical Education Volume 79, Number 12, 12/2002.
Résumé : Structural studies of phycobiliproteins from spirulina : combining spectroscopy, thermodynamics and molecular modeling in an undergraduate biochemistry experiment. Feature molecules : nitric oxide-releasing compounds. C-SNARF-1 as a fluorescent probe for pH measurements i living cells : two-wavelenght-ratio method versus whole-spectral-resolution method. Determination of a diffusion coefficient by capillary electrophoresis : an experiment for the physical and biophysical chemistry laboratories.


Périodique
Journal of Chemical Education Volume 80, Number 01, 01/2003.
Résumé : Implementation of a geographic information system in the chemistry laboratory : an exercice in integrating environmental analysis and assessment. The analysis of seawater : a laboratory-centered learning project in general chemistry. The water project : a multi-week laboratory project for undergraduate analytical chemistry. Micelle-mediated extraction of heavy metals from environmental samples : an environmental green chemistry laboratory experiment. Microscale quantitative analysis of hard water samples using an indirect potassium permanganate redox titration. Environmental redox potential and redox capacity concepts using a simple polarographic experiment. Competitive sorption between oxalate and phosphate in soil : an environmental chemistry laboratory using ion chromatography. Featured molecule : dibenzyl terephthalate. An easy determination of the surface chemical properties of simple and natural solids. Chemical recycling of pop bottles : the synthesis of dibenzyl terephthalate from the plastic polyethylene terephthalate. Measurement of trace metals in tobacco and cigarette ash by inductively coupled plasma-atomic emssion spectroscopy. Inductively coupled plasma-atomic emission spectroscopy : two laboratory activities for the undergraduate instrumental analysis course.


Périodique
Journal of Chemical Education Volume 80, Number 02, 02/2003.
Résumé : A general chemistry laboratory theme : spectroscopic analysis of aspirine. Featured molecules : acetaminophen, aspirin and caffeine. Mass spectra. Identifying a protein by MALDI-TOF mass spectrometry : an experiment for the undergraduate laboratory. A novel microscale gas generator. A photolithography laboratory experiment for general chemistry students. Visualizing atoms, molecules and surfaces by scanning probe microscopy. Atomic scale imaging : a hands-on scanning probe microscopy laboratory for undergraduates.


Périodique
Journal of Chemical Education Volume 80, Number 03, 03/2003.
Résumé : Effective laboratory experiences for students with disabilities : the role of a student laboratory assistant. Using ice-cooled condensers in chemistry laboratory. Incomplete combustion with candle flames : a guided-inquiry experiment in the first-year chemistry lab. Flipping pennies and burning candles : adventures in kinetics. Stoichiometry of the reaction of magnesium with hydrochloric acid. A literature-based, one quarter inorganic chemistry laboratory course. C-H and C-D bonds : an experimental approach to the identity of C-H bonds by their conversion to C-D bonds. Semi-microscale willimason ether synthesis and simultaneous isolation of an expectorant from cough tablets. Featured molecules : enantiomers of guaifenesin. Microscale capillary electrophresis : a complete instrumentation experiment for chemistry students at the undergraduate junior or senior level. A graduate course in modern analytical methods : investigating the structure magnetic properties and thermal behavior of CuSO45H2O. Detection of method effects on quality of analytical data : a statistical exercice.


Périodique
Journal of Chemical Education Volume 80, Number 04, 04/2003.
Résumé : Was the suspect in contact with the victim? an instrumental methods experiment for the analysis of single fibers using FT-IR microscopy. Analysis of carbon monoxide in blood. Identification of forensic samples via mitochondrial DNA in the undergraduate biochemistry laboratory. Featured molecules : sucrose and vanillin. Like dissolves like : a classroom demonstration and a guided-inquiry experiment for organic chemistry.


Périodique
Journal of Chemical Education Volume 80, Number 05, 05/2003.
Résumé : Classification of vegetable oils by principal component analysis of FTIR spectra. Quantitative microscale hydrogenation of vegetable oils. Milk as a drug analysis medium : HPLC determination of isoniazid. Sailing on the "C" : a vitamin titration with a twist. Titrimetric determination of carbon dioxide in a heterogeneous sample ("pop rocks"). The determination of the pK of multiprotic, weak acids by analyzing potentiometric acid-base titration data with difference plots. A simple method for determination of solubility in the first-year laboratory. A concept-based environmental project for the first-year laboratory : remediation of barium-contaminated soil by in situ immobilization.