Reaction Mechanisms 1. The kinetics of the reaction: 2X + Y→ Z was studied, and the results are: Experiment [X] M 0.20 1 2 3 4 0.20 0.40 0.60 I X+Y→ M (slow) X + M → Z (fast) [Y] M 0.10 0.20 0.20 0.60 Initial Rate (M/s) 7.0 x 10-4 1.4 x 10.³ 1.4 x 10.³ 4.2 x 10-³ a. Deduce the rate law including the value of k with units. b. The following 3 mechanisms have been proposed from the data above. Mechanism Mechanism II Mechanism III Y → M (slow) Y→ M (slow) X+M → Z (fast) M+X→ N (fast) N+X→ Z (fast) The species M and N are called intermediates, they are formed in early steps and consumed in later steps. a. What is the overall reaction for each mechanism? b. What is the molecularity of each step? c. What is the rate law derived from each step? d. Which mechanism is consistent with the rate law from part a? Why?

Reaction Mechanisms 1. The kinetics of the reaction: 2X + Y→ Z was studied, and the results are: Experiment [X] M 0.20 1 2 3 4 0.20 0.40 0.60 I X+Y→ M (slow) X + M → Z (fast) [Y] M 0.10 0.20 0.20 0.60 Initial Rate (M/s) 7.0 x 10-4 1.4 x 10.³ 1.4 x 10.³ 4.2 x 10-³ a. Deduce the rate law including the value of k with units. b. The following 3 mechanisms have been proposed from the data above. Mechanism Mechanism II Mechanism III Y → M (slow) Y→ M (slow) X+M → Z (fast) M+X→ N (fast) N+X→ Z (fast) The species M and N are called intermediates, they are formed in early steps and consumed in later steps. a. What is the overall reaction for each mechanism? b. What is the molecularity of each step? c. What is the rate law derived from each step? d. Which mechanism is consistent with the rate law from part a? Why?

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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