8. a) Starting from the rate law for the second order reaction below, derive the relationship between half- life, rate constant, and initial concentration. 2A > В

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8.
a) Starting from the rate law for the second order reaction below, derive the relationship between half-
life, rate constant, and initial concentration.
2A → B
8.
b) Draw the potential energy diagrams (qualitatively) for the following reaction mechanisms. Assume
that all intermediates are higher energy than their respective reactant states, and that the
product state is lower in energy than the reactant state.
Mechanism 1:
03 + NO → 02 + NO3
(slow)
0 + 03 → 2 02
(fast)
NO3 + NO → 2 NO2
(fast)
Mechanism 2:
03 2 02 +0
(fast)
NO + 0 → NO2
(slow)
Mechanism 3:
03 + NO → 02 + NO2
(slow)
Transcribed Image Text:8. a) Starting from the rate law for the second order reaction below, derive the relationship between half- life, rate constant, and initial concentration. 2A → B 8. b) Draw the potential energy diagrams (qualitatively) for the following reaction mechanisms. Assume that all intermediates are higher energy than their respective reactant states, and that the product state is lower in energy than the reactant state. Mechanism 1: 03 + NO → 02 + NO3 (slow) 0 + 03 → 2 02 (fast) NO3 + NO → 2 NO2 (fast) Mechanism 2: 03 2 02 +0 (fast) NO + 0 → NO2 (slow) Mechanism 3: 03 + NO → 02 + NO2 (slow)
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