Which of the following mechanisms are possible for the thermal decomposition of NO2? The rate of thermal decomposition = k[NO2]2.
Choose one or more:
Mechanism A
Mechanism B
Mechanism C
Which of the following mechanisms are possible for the photochemical decomposition of NO2? The rate of photochemical decomposition = k[NO2].
Choose one or more:
Mechanism A
Mechanism B
Mechanism C
The rate laws for the thermal and photochemical decomposition of NO2 are different.?
回答 (1)
2019-03-06 11:28 am
✔ 最佳答案
The rate equation depends on the rate-determining step (the slowest step) in the mechanism.For Mechanism A:
The rate-determining step is NO₂(g) + NO₂(g) → N₂O₄(g)
Rate = k [NO₂]²
For Mechanism B:
The rate-determining step is NO₂(g) + NO₂(g) → NO(g) + NO₃(g)
Rate = k [NO₂]²
For Mechanism C:
The rate-determining step is NO₂(g) → N(g) + O₂(g)
Rate = k [NO₂]
The answer: Mechanism A and Mechanism B
收錄日期: 2021-05-01 22:32:07
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