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Castano, F.; And Others – Journal of Chemical Education, 1983
The RKR method for determining accurate potential energy curves is described. Advantages of using the method (compared to Morse procedure) and a TRS-80 computer program which calculates the classical turning points by an RKR method are also described. The computer program is available from the author upon request. (Author/JN)
Descriptors: Chemistry, College Science, Computer Programs, Energy
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Fulop, F.; And Others – Journal of Chemical Education, 1983
In representing conformational equilibria of compounds having only one chiral center, erroneous formulas showing different antipodes on the two sides of the equilibrium are rare. In contrast, with compounds having two or more chiral centers especially with saturated heterocycles, this erroneous representation occurs frequently in the chemical…
Descriptors: Chemical Equilibrium, Chemistry, College Science, Higher Education
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Tasic, Aleksandar Z.; Djordjevic, Bojan D. – Journal of Chemical Education, 1983
Demonstrates construction of density constant and refractive index constant lines in triangular coordinate system on basis of systematic experimental determinations of density and refractive index for both homogeneous (single-phase) ternary liquid mixtures (of known composition) and the corresponding binary compositions. Background information,…
Descriptors: Chemical Analysis, Chemistry, College Science, Density (Matter)
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Perez, J. M.; Quereda, R. – Journal of Chemical Education, 1983
Describes advanced undergraduate laboratory exercise examining the dependence of the rate constants and the instantaneous concentrations with the nature and energy content in a gas-phase complex reaction. Computer program (with instructions and computation flow charts) used with the exercise is available from the author. (Author/JN)
Descriptors: Chemical Reactions, Chemistry, College Science, Computer Programs
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Cole, G. Mattney, Jr.; Waggoner, William H. – Journal of Chemical Education, 1983
To assist in designing/implementing qualitative analysis courses, examines reliability/accuracy of several published separation schemes, notes methods where particular difficulties arise (focusing on Groups II/III), and presents alternative schemes for the separation of these groups. Only cation analyses are reviewed. Figures are presented in…
Descriptors: Chemical Analysis, Chemical Reactions, Chemistry, College Science
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Gilbert, George L., Ed. – Journal of Chemical Education, 1983
Presents background information and procedures for producing sequential color reactions. With proper selection of pH indicator dyes, most school colors can be produced after mixing colorless solutions. Procedures for producing white/purple and red/white/blue colors are outlined. Also outlines preparation of 2, 4, 2', 4',…
Descriptors: Chemical Reactions, Chemistry, College Science, Demonstrations (Educational)
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Cohen, Sheldon H., Ed. – Journal of Chemical Education, 1983
Describes a low-cost, high-voltage, two-terminal, constant-current source for student use in electrophoresis experiments (includes circuit diagram) and a simple device for the continuous registering of gas flows. Also lists seven cost-saving tips for chemical reagent, including use decorative stones (purchased from nursery stores) in place of…
Descriptors: Biochemistry, Chemistry, College Science, Electric Circuits
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Hall, Stephen K. – Journal of Chemical Education, 1983
Topics addressed in this discussion of toxicology and chemical safety include routes of exposure, dose/response relationships, action of toxic substances, and effects of exposure to chemicals. Specific examples are used to illustrate the principles discussed. Suggests prudence in handling any chemicals, whether or not toxicity is known. (JN)
Descriptors: Chemistry, College Science, Higher Education, Laboratory Safety
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Vinaixa, J.; Ferrer, M. – Journal of Chemical Education, 1983
Although a large number of experiments on aquation kinetics of inert octahedral complexes exist, few exist on the reverse (anation) reaction. Preliminary considerations and laboratory procedures for a kinetic study of the anation reaction are provided. Several pairs of students can complete the experiment in a three-hour period. (Author/JN)
Descriptors: Chemical Reactions, College Science, Higher Education, Inorganic Chemistry
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Doeltz, Anne E.; And Others – Journal of Chemical Education, 1983
"Anodizing Aluminum" (previously reported in this journal) describes a vivid/relevant laboratory experience for general chemistry students explaining the anodizing of aluminum in sulfuric acid and constrasting it to electroplating. Additions to this procedure and the experiment in which they are used are discussed. Reactions involved are…
Descriptors: Chemical Reactions, Chemistry, College Science, Electricity
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Ross, Joseph H. – Journal of Chemical Education, 1983
Effect of the "polarity" of low-polarity solvents on the amount of swelling produced in a solid polymer (demonstrated in an organic chemistry lecture) is also suitable as a laboratory experiment. Students can be assigned to a small group of solvents from the list provided. Procedures and materials needed are included. (Author/JN)
Descriptors: Chemical Reactions, Chemistry, College Science, Demonstrations (Educational)
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