Consider the reaction of S,0. with I-, in ague ons solntion: 8, S202-(an)"+3 I- (an)© 250Ź car) +Ig(a2) 8. 4 At a given temp. the rate Of disa ppear ance of 'S,0? varies with reactant concentrafions in the following manner: experiment [S20; (M) [I-](M) Rate (MIs) 0.018 2 0.027 3. 0.034 2.6 0-036 3.9 10- 10-6 0-036 0.054 7-8 4. 0.050 0-072 1.4 10 a.) Determine the rate law and the rate constant tor the reaction

Consider the reaction of S,0. with I-, in ague ons solntion: 8, S202-(an)"+3 I- (an)© 250Ź car) +Ig(a2) 8. 4 At a given temp. the rate Of disa ppear ance of 'S,0? varies with reactant concentrafions in the following manner: experiment [S20; (M) [I-](M) Rate (MIs) 0.018 2 0.027 3. 0.034 2.6 0-036 3.9 10- 10-6 0-036 0.054 7-8 4. 0.050 0-072 1.4 10 a.) Determine the rate law and the rate constant tor the reaction

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter12: Chemical Kinetics

Section: Chapter Questions

Problem 110CP: Consider a reaction of the type aA products, in which the rate law is found to he rate = k[A]3...

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Consider a reaction of the type aA products, in which the rate law is found to he rate = k[A]3 (termolecular reactions are improbable but possible). If the first half-tife of the reaction is found to he 40. s, what is the time for the second half-life? Hint: Using your calculus knowledge, derive the integrated rate law from the differential rate law for a tennolecular reaction: Rate=d[A]dt=k[A]3
The rate of photodecomposition of the herbicide piclo- ram in aqueous systems was determined by exposure to sunlight for a number of days. One such experiment produced the following results. (Data from R.T. Hedlun and C.R. Youngson, “The Rates of Photodecomposition of Picloram in Aqueous Systems," Fate of Organic Pesticides in tbe Aquatic Environment, Advances in Chemistry Series, #111, American Chemical Society (1972), 159—172.) Exposure Time, t (days) [Pidoram] (mol L_1) 0 4.14 X 10-6 7 3.70 X 10-6 14 3.31 X 10-6 21 2.94 X 10~6 28 2.61 X 10~6 35 2.30 X 10-6 42 2.05 X 10-6 49 1.82 X 10"6 56 1.65 X 10-6 Determine the order of reaction, the rate constant, and the half-life for the photodecomposition of picloram.
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