30. A possible mechanism for the reaction 2H2 + 2NO -> N2 + 2H2O is: Step 1: H2

Question

30. A possible mechanism for the reaction 2H2 + 2NO -> N2 + 2H2O is:

Step 1: H2 + 2NO -> N2O + H2O     (slow)
Step 2: N2O + H2 -> N2 + H2O       (fast)

Based on the mechanism, what is the rate law of the overall reaction? (Points : 3)

       Rate = k[H2]^2[NO]^2
       Rate = k[H2][NO]^2
       Rate = k[N2O][H2]
       Rate = k[H2][NO]
       Rate = k[N2O][H2O]

30. A possible mechanism for the reaction 2H2 + 2NO -> N2 + 2H2O is:

Step 1: H2 + 2NO -> N2O + H2O     (slow)
Step 2: N2O + H2 -> N2 + H2O       (fast)

Based on the mechanism, what is the rate law of the overall reaction? (Points : 3)

Explanation / Answer

In slowest step there are 1 H2 and 2 No reacts

so,
     Rate = k[H2][NO]^2

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