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Blue Bottle, Red and Blue Bottle Color changes are caused by reactions of oxygen in the air with chemicals in a solution. The colors fade over time, but can be regenerated by shaking the flask containing the solution.
Induction by Iron(II) of the Oxidation of Iodide by Dichromate Acidic aqueous solutions containing dichromate and iodide ions are mixed with no reaction. The addition of a solution of iron(II) ion induces the rapid formation of brown triiodide ion.
Kinetics : ArrheniusActEnergy (4 Variations)
The rate constant for the first-order dehydration of tert-butyl alcohol at 500oC is 1.20 x 10 -4 s -1. The rate constant for this process at 600oC is 6.80 x 10 -3 s -1. Calculate the activation energy for this reaction in kJ/mol. (R = 8.314 J/mol K)
Kinetics |
Chemometrics
Kinetics : ArrheniusTemp (3 Variations)
The activation energy for the isomerization of cyclopropane to propene is 274 kJ/mol. By what factor does the rate of reaction increase as the temperature rises from 500oC to 550oC assuming all else remains constant? (R = 8.314 J/mol k)
Hint: This is asking for the ratio of rates which is proportional to the ratio of the rate constants, all else being equal.
Data Pooling in a Chemical Kinetics Experiment: The Aquation of a Series of Cobalt(III) ComplexesRichard S. Herrick, Kenneth V. Mills, and Lisa P. Nestor Describes an experiment that introduces students to integrated rate laws, the search for a mechanism that is consistent with chemical and kinetic data, and the concept of activation barriers and their measurement in a curriculum whose pedagogical philosophy makes the laboratory the center of learning for undergraduates in their first two years of instruction. Herrick, Richard S.; Mills, Kenneth V.; Nestor, Lisa P. J. Chem. Educ.2008, 85, 1120.
Coordination Compounds |
Kinetics |
Mechanisms of Reactions |
Rate Law |
UV-Vis Spectroscopy
Study of Metal–NH3 Interfaces (Metal = Cu, Ni, Ag) Using Potentiostatic CurvesNelson Nunes, Angela Martins, and Ruben Elvas Leitão Students determine kinetic and thermodynamic parameters of different metalsolution interfaces obtained from potentiostatic curves using the Tafel and the Arrhenius equations. Nunes, Nelson; Martins, Angela; Leitão, Ruben Elvas. J. Chem. Educ.2007, 84, 1017.
Aqueous Solution Chemistry |
Electrochemistry |
Kinetics |
Metals
The Finkelstein Reaction: Quantitative Reaction Kinetics of an SN2 Reaction Using Nonaqueous ConductivityR. David Pace and Yagya Regmi Presents a quantitative kinetics laboratory exercise featuring the Finkelstein reaction (SN2) for use in the first-semester organic chemistry course that utilizes nonaqueous conductivity as the method by which relevant structuretemperaturesolvent effects are examined. Pace, R. David; Regmi, Yagya. J. Chem. Educ.2006, 83, 1344.
Mechanism-Based Kinetics SimulatorRobert M. Hanson Simulate the kinetics of a reaction based on its mechanism using JavaScript. The idea is to write a mechanism and, based on that, follow the course of concentrations or rates of change in concentration of reactants, catalysts, intermediates, and products over time.
Kinetics |
Catalysis |
Mechanisms of Reactions
ChemPaths 104 W Feb 23John W. Moore Today in Chem 104:
* Lecture: Mechanisms of Reactions
* Reading:
Kotz, Ch. 15, Sec. 5-6
Moore, Ch. 13, Sec. 6-76
* Homework #5 due by 11:55 pm F Feb 25
* Excel Assignment due in first discussion section this week
* Quiz 4 in second discussion section this week
Mechanisms of Reactions
ChemPaths 104 F Feb 25John W. Moore Today in Chem 104:
* Lecture: Problem-Solving Session
* No assigned reading for today.
* Homework #5 due by 11:55 pm Today!
* Biomolecules Tutorial Enzymes (including Enzymes Quiz)
is due Wed. Mar. 2, at 11:55 pm.
