Solved: Consider the following hypothetical data collected

Chapter 16, Problem 16.1

(choose chapter or problem)

Consider the following hypothetical data collected in two studies of the reaction 2A(g) 1 2B(g) 88n C(g) 1 2D(g) Time (s) Experiment 1 [A] (mol/L) Experiment 2 [A] (mol/L) 0. 1.0 3 1022 1.0 3 1022 10. 8.4 3 1023 5.0 3 1023 20. 7.1 3 1023 2.5 3 1023 30. ? 1.3 3 1023 40. 5.0 3 1023 6.3 3 1024 In experiment 1, [B] 5 10.0 M. In experiment 2, [B] 5 20.0 M. Rate 5 2d3A4 dt a. Use the concentration versus time data to determine the rate law for the reaction. b. Solve for the rate constant k for the reaction. Include units. c. Calculate the concentration of A in experiment 1 at t 5 30. s. d. The following three mechanisms are proposed for this reaction: i. 2B 34 B2 (Fast equilibrium) B2 1 A 88n E 1 D (Slow) E 1 A 88n C 1 D (Fast) ii. A 1 B 88n D 1 F (Slow) F 1 B 88n C 1 G (Fast) G 1 A 88n D (Fast) iii. A 1 2B 88n E 1 D (Slow) E 1 A 88n C 1 D (Fast) Choose the best mechanism(s). Include an explanation of which mechanism(s) you exclude and why. If you believe two (or even all three) mechanisms are equally good, explain why.