题目
题目

CHEM 110 Lecture Quiz Week 6

单项选择题

A proposed mechanism for the reaction 2O3 ---> 3O2 is shown below. NO + O3 ---> NO2 + O2              (slow) NO2 + O3 ---> NO + 2O2           (fast) What is the rate law consistent with this mechanism?

选项
A.rate = k[NO][O3]
B.rate = k[NO2][O3]
C.rate = k[NO][O3]2[NO2]
D.rate = k[O3]2
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标准答案
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思路分析
Begin by identifying the rate-determining step in the provided mechanism. The slow step is NO + O3 -> NO2 + O2, which means the overall reaction rate is controlled by this step. Option 1: rate = k[NO][O3]. This directly matches the rate expression for the slow, elementary step, since the rate depends on the concentrations ......Login to view full explanation

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Rate constants have units of                         .

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