The reaction NO₂ + CO → NO + CO₂ occurs in two steps, the slow first step being 2NO₂ → NO₃ + NO. What is the rate equation?
Correct answer D. rate = k[NO₂]²
Explanation
The slowest step determines the rate. It involves two NO₂ molecules and no CO, so rate = k[NO₂]², and CO does not appear in the rate law.
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