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Nitric oxide is formed at high temperature in the presence of oxygen and nitrogen. A proposed mechanKinetics Chemistry Question

Question

Nitric oxide is formed at high temperature in the presence of oxygen and nitrogen. A proposed mechanism for its formation is shown:
O2(g) ⇌ 2 O(g) fast, unfavorable
N2(g) + O(g)  NO(g) + N(g) slow
N(g) + O(g)  NO(g) very fast
What rate law is predicted by this mechanism?

A.

Rate = k[O2]

B.

Rate = k[N2][O2]

C.

Rate = k[N2][O2]1/2

✓ Correct
D.

Rate = k[N2][O2]2

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