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Journal Articles: 16 results
Entropy and the Shelf Model: A Quantum Physical Approach to a Physical Property  Arnd H. Jungermann
A quantum physical approach relying on energy quantization leads to three simple rules which are the key to understanding the physical property described by molar entropy values.
Jungermann, Arnd H. J. Chem. Educ. 2006, 83, 1686.
Alcohols |
Alkanes / Cycloalkanes |
Carboxylic Acids |
Covalent Bonding |
Ionic Bonding |
Physical Properties |
Quantum Chemistry |
Thermodynamics
Developing Critical Thinking Skills: The "Sabotaged" Synthesis of Methyl p-Bromobenzoate  Eric J. Mahan and Mary Alice Nading
Before beginning an experiment, students are told that someone might have sabotaged their experiment to produce other-than-expected results. The objective is to perform the experiment, determine if any sabotage has occurred, and, if so, identify the changes that were made to the reagents as well as the person responsible.
Mahan, Eric J.; Nading, Mary Alice. J. Chem. Educ. 2006, 83, 1652.
Alcohols |
Carboxylic Acids |
Esters |
IR Spectroscopy |
NMR Spectroscopy |
Mass Spectrometry |
Synthesis
Ozonolysis Problems That Promote Student Reasoning  Ray A. Gross Jr.
The structural features inherent in acyclic monoterpenes that follow the isoprene rule often lead to unique sets of ozonolysis products from which their structures, excluding stereochemistry, can be determined from molecular formulas only. This article shows how students may elucidate the structures of these compounds by analysis of the oxidative and reductive workup products.
Gross, Ray A., Jr. J. Chem. Educ. 2006, 83, 604.
Aldehydes / Ketones |
Alkenes |
Alkynes |
Carboxylic Acids |
Oxidation / Reduction |
Student-Centered Learning
Application of ChemDraw NMR Tool: Correlation of Program-Generated 13C Chemical Shifts and pKa Values of para-Substituted Benzoic Acids  Hongyi Wang
An application of ChemDraw NMR Tool was demonstrated by correlation of program-generated 13C NMR chemical shifts and pKa values of para-substituted benzoic acids. Experimental 13C NMR chemical shifts were analyzed in the same way for comparison. The project can be used as an assignment at the end of the first-year organic chemistry course to review topics or explore new techniques: Hammett equation, acidbase equilibrium theory, electronic nature of functional groups, inductive and resonance effects, structurereactivity relationship, NMR spectroscopy, literature search, database search, and ChemDraw software.
Wang, Hongyi. J. Chem. Educ. 2005, 82, 1340.
Acids / Bases |
Equilibrium |
NMR Spectroscopy |
Aqueous Solution Chemistry |
Carboxylic Acids
Stearic Acid  Jay A. Young
Properties, hazards, and storage requirements for stearic acid.
Young, Jay A. J. Chem. Educ. 2004, 81, 25.
Laboratory Equipment / Apparatus |
Laboratory Management |
Carboxylic Acids |
Acids / Bases |
Physical Properties
Analytical Spectroscopy Using Modular Systems  Brian M. Patterson, Neil D. Danielson, Gary A. Lorigan, and André J. Sommer
This article describes the development of three analytical spectroscopy experiments that compare the determination of salicylic acid (SA) content in aspirin tablets. The experiments are based on UVvis, fluorescence, and Raman spectroscopies and utilize modular spectroscopic components. Students assemble their own instruments, optimize them with respect to signal-to-noise, generate calibration curves, determine the SA content in retail aspirin tablets, and assign features in the respective spectra to functional groups within the active material.
Patterson, Brian M.; Danielson, Neil D.; Lorigan, Gary A.; Sommer, André J. J. Chem. Educ. 2003, 80, 1460.
Fluorescence Spectroscopy |
Laboratory Equipment / Apparatus |
Quantitative Analysis |
Raman Spectroscopy |
UV-Vis Spectroscopy |
Aromatic Compounds |
Esters |
Carboxylic Acids |
Alcohols
"Chiral Acetate": The Preparation, Analysis, and Applications of Chiral Acetic Acid  Addison Ault
Production of chiral acetic acid using deuterium and tritium and its application to understanding stereochemistry and the specificity of enzymatic reactions.
Ault, Addison. J. Chem. Educ. 2003, 80, 333.
Chirality / Optical Activity |
Enzymes |
Isotopes |
Synthesis |
Stereochemistry |
Enrichment / Review Materials |
Carboxylic Acids |
Enantiomers |
Reactions |
Mechanisms of Reactions
C–H and C–D Bonds: An Experimental Approach to the Identity of C–H Bonds by Their Conversion to C–D Bonds  Alex T. Rowland
Three experiments that allow students to determine the relative reactivity of C-H bonds that are aliphatic, alpha, benzylic, or aromatic by the ease of substitution of deuterium for oxygen.
Rowland, Alex T. J. Chem. Educ. 2003, 80, 311.
Acids / Bases |
IR Spectroscopy |
Isotopes |
NMR Spectroscopy |
Undergraduate Research |
Alkanes / Cycloalkanes |
Aromatic Compounds |
Carboxylic Acids
Formic Acid  Jay A. Young
Properties, hazards, and storage requirements for formic acid.
Young, Jay A. J. Chem. Educ. 2002, 79, 157.
Acids / Bases |
Physical Properties |
Laboratory Management |
Carboxylic Acids
Chemical Laboratory Information Profile: Acetic Acid (glacial)  Jay A. Young
Properties, hazards, and storage requirements for acetic acid (glacial).
Young, Jay A. J. Chem. Educ. 2001, 78, 721.
Acids / Bases |
Laboratory Management |
Physical Properties |
Carboxylic Acids
An Organoleptic Laboratory Experiment  John M. Risley
Compounds in ten different classes of organic molecules that are used in the fragrance and food industry are provided to students. Students whiff the vapors of each compound and describe the organoleptic properties using a set of terms utilized in the fragrance and food industry. A set of questions guides students to an understanding of the relationship between structure of molecules and smell.
Risley, John M. J. Chem. Educ. 1996, 73, 1181.
Molecular Properties / Structure |
Consumer Chemistry |
Physical Properties |
Nonmajor Courses |
Alcohols |
Aldehydes / Ketones |
Amines / Ammonium Compounds |
Carboxylic Acids |
Esters |
Ethers |
Phenols
Small Scale Determination of the pKa Values for Organic Acids  Flash, Patrick
Determination and interpretation of the pKa values for a series of organic acids as a concrete example of the effect of structure on acid strength.
Flash, Patrick J. Chem. Educ. 1994, 71, A6.
Acids / Bases |
Molecular Properties / Structure |
Carboxylic Acids
Illustrating the inductive effect on acid strength of carboxylic acids  Kolb, Kenneth E.; Kolb, Doris
The effect of various substituents on acid strength can be easily demonstrated using aqueous solutions of various carboxylic acids containing a suitable indicator.
Kolb, Kenneth E.; Kolb, Doris J. Chem. Educ. 1989, 66, 1034.
Acids / Bases |
Carboxylic Acids
Identification of an unknown ester: An analytical-organic experiment  Grob, Robert L.; Husk, G. Ronald
It is the student's challenge to hydrolyze an ester, separate and purify the resultant alcohol and acid, determine several physical and chemical characteristics, and arrive at a logical choice for its identity.
Grob, Robert L.; Husk, G. Ronald J. Chem. Educ. 1969, 46, 769.
Quantitative Analysis |
Esters |
Alcohols |
Carboxylic Acids
Identification of carboxylic acids: Use of N-methylpiperazine and N-phenylpiperazine  Duff, J. G.; Yung, D. K.; Brenner, R. J.; Wilson, B. J.; Racz, W. J.
Demonstrates that N-phenylpiperazine is a useful reagent for the identification of carboxylic acids.
Duff, J. G.; Yung, D. K.; Brenner, R. J.; Wilson, B. J.; Racz, W. J. J. Chem. Educ. 1969, 46, 388.
Carboxylic Acids |
Qualitative Analysis
Hydrogen bonding and physical properties of substances  Ferguson, Lloyd N.
Physical properties influenced by hydrogen bonding considered in this paper include transition temperatures, vapor pressure, water solubility, the ionization of carboxylic acids, stereoisomerism, adsorption, and infrared spectra.
Ferguson, Lloyd N. J. Chem. Educ. 1956, 33, 267.
Hydrogen Bonding |
Noncovalent Interactions |
Physical Properties |
Aqueous Solution Chemistry |
Carboxylic Acids |
Stereochemistry |
IR Spectroscopy