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Nitrogen dioxide reacts with carbon monoxide with the rate law shown NO2(g) + CO(g) ® NO(g) + CO2(g)Kinetics Chemistry Question

Question

Nitrogen dioxide reacts with carbon monoxide with the rate law shown
NO2(g) + CO(g) ® NO(g) + CO2(g)
Rate = k[NO2]2
Which mechanisms are consistent with this rate law?
I. 2 NO2 ⇄ N2O4 fast, unfavorable
N2O4 + CO ® N2O3 + CO2 slow
N2O3 ® NO + NO2 fast
II. 2 NO2 ® NO + NO3 slow
NO3 + CO ® NO2 + CO2 fast

A.

I only

B.

II only

✓ Correct
C.

Both I and II

D.

Neither I nor II

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