An overall reaction between nitric oxide and hydrogen is given as follows: 2NO + 2H2 → N2 + 2H;0 From experimental reaction testing data, you find the following empirical rate expression: IN, = K[NO] (H2] Two of your best engineers have proposed different mechanisms for the observed rate. (Part a) Show using the rate determining step approximation. Are either of the proposed mechanisms (or both) consistent with the empirical rate expression? (Part b) Are either (or both) of the mechanisms actually occurring? Explain. proposed mechanism 1: Step 1: 2NO + H2 > N2 + H2O2 (slow) k2 Step 2: H,O, + H, → 2H;0 (fast) proposed mechanism 2: ka Step 1: 2NO O N,O2 (fast) ka ks Step 2: N,O, + H; > N3 + H,O2 (slow) k2 Step 3: H2O2 + Hz > 2H20 (fast)

An overall reaction between nitric oxide and hydrogen is given as follows: 2NO + 2H2 → N2 + 2H;0 From experimental reaction testing data, you find the following empirical rate expression: IN, = K[NO] (H2] Two of your best engineers have proposed different mechanisms for the observed rate. (Part a) Show using the rate determining step approximation. Are either of the proposed mechanisms (or both) consistent with the empirical rate expression? (Part b) Are either (or both) of the mechanisms actually occurring? Explain. proposed mechanism 1: Step 1: 2NO + H2 > N2 + H2O2 (slow) k2 Step 2: H,O, + H, → 2H;0 (fast) proposed mechanism 2: ka Step 1: 2NO O N,O2 (fast) ka ks Step 2: N,O, + H; > N3 + H,O2 (slow) k2 Step 3: H2O2 + Hz > 2H20 (fast)

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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