The mechanism for NO₂ (g) + CO (g)→NO (g) + CO₂ (g) is thought to be: NO₂ + NO₂→NO₃ + NO (slow) NO₃ + CO→NO₂ + CO₂ (fast) The rate law for this reaction is:

Question

Quizplus · Accepted Answer

The slow step is the rate-determining step, so the rate law is determined by the concentrations of the reactants in that step. In this case, the slow step is NO₂ + NO₂→NO₃ + NO, so the rate law is Rate = k [NO₂]².

The Mechanism for NO2 (G) + CO (G)→NO (G)

The Mechanism for NO₂ (G) + CO (G)→NO (G)