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Course: AP®︎/College Chemistry > Unit 5

Lesson 4: Reaction mechanisms
Science
AP®︎/College Chemistry
Kinetics
Reaction mechanisms
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Reaction mechanisms

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Problem

A reaction and its experimental rate law are represented below.
2ICl(g)+HA2(g)→IA2(g)+2HCl(g)rate=k[ICl][HA2]
A chemist proposes a mechanism for the reaction that is consistent with the rate law. The mechanism has two elementary steps, and the first step is slow compared to the second.
Which of the following could be the first step of the proposed mechanism?
Choose 1 answer: