AP Chemistry· difficulty 4/5
For the proposed mechanism: (1) NO + NO → NO + NO (slow); (2) NO + CO → NO + CO (fast). The rate law is
rate = k[NO]
rate = k[NO][CO]
rate = k[NO][CO]
rate = k[NO] (slow step rate-determining)
Explanation
Rate-determining (slow) step controls: rate = k[NO]. CO doesn't appear because it enters only in the fast step.
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