Consider the hypothetical reaction 2 A + B---->2 C + D.The following two-step mechanism is proposed for the reaction:Step 1: A + B--->C + XStep 2: A + X---->C + DX is an unstable intermediate. (a) What is the predictedrate law expression if Step 1 is rate determining? (b) What is the predicted rate law expression if Step 2 is rate determining?(c) Your result for part (b) might be consideredsurprising for which of the following reasons: (i) The concentrationof a product is in the rate law. (ii) There is anegative reaction order in the rate law. (iii) Both reasons(i) and (ii). (iv) Neither reasons (i) nor (ii).
Consider the hypothetical reaction 2 A + B---->2 C + D.The following two-step mechanism is proposed for the reaction:Step 1: A + B--->C + XStep 2: A + X---->C + DX is an unstable intermediate. (a) What is the predictedrate law expression if Step 1 is rate determining? (b) What is the predicted rate law expression if Step 2 is rate determining?(c) Your result for part (b) might be consideredsurprising for which of the following reasons: (i) The concentrationof a product is in the rate law. (ii) There is anegative reaction order in the rate law. (iii) Both reasons(i) and (ii). (iv) Neither reasons (i) nor (ii).
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
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Consider the hypothetical reaction 2 A + B---->2 C + D.
The following two-step mechanism is proposed for the reaction:
Step 1: A + B--->C + X
Step 2: A + X---->C + D
X is an unstable intermediate. (a) What is the predicted
rate law expression if Step 1 is rate determining? (b) What is the predicted rate law expression if Step 2 is rate determining?
(c) Your result for part (b) might be considered
surprising for which of the following reasons: (i) The concentration
of a product is in the rate law. (ii) There is a
negative reaction order in the rate law. (iii) Both reasons
(i) and (ii). (iv) Neither reasons (i) nor (ii).
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