Answer: The following data were collected in two studies

Chapter 15, Problem 15.128

(choose chapter or problem)

The following data were collected in two studies of the reaction 2A 1 B 88n C 1 D where Rate 5 2d3A4 dt Time (s) Experiment 1 [A] (M) 3 1022 Experiment 2 [A] (M) 3 1022 0 10.0 10.0 20. 6.67 5.00 40. 5.00 3.33 60. 4.00 2.50 80. 3.33 2.00 100. 2.86 1.67 120. 2.50 1.43 In experiment 1, [B]0 5 5.0 M. In experiment 2, [B]0 5 10.0 M. a. Why is [B] much greater than [A]? b. Give the rate law and value for k for this reaction c. Which of the following mechanisms could be correct for this reaction? Justify your choice. i. A 1 B 34 E (fast equilibrium) E 1 B 88n C 1 D (slow) ii. A 1 B 34 E (fast equilibrium) E 1 A 88n C 1 D (slow) iii. A 1 A 88n E (slow) E 1 B 88n C 1 D (fast)