Consider the following mechanism proposed below: H2 + NO -> H2O + N (slow) N + N

Question

Consider the following mechanism proposed below: H2 + NO -> H2O + N (slow) N + NO -> N2 + O (Fast) O + H2 -> H2O (Fast)
What is the overall reaction for this proposed mechanism? Identify the reaction intermediates. What is the rate law for the overall reaction according to this mechanism? Consider the following mechanism proposed below: H2 + NO -> H2O + N (slow) N + NO -> N2 + O (Fast) O + H2 -> H2O (Fast)
What is the overall reaction for this proposed mechanism? Identify the reaction intermediates. What is the rate law for the overall reaction according to this mechanism? H2 + NO -> H2O + N (slow) N + NO -> N2 + O (Fast) O + H2 -> H2O (Fast)
What is the overall reaction for this proposed mechanism? Identify the reaction intermediates. What is the rate law for the overall reaction according to this mechanism?

Explanation / Answer

The overall reaction is:

H2 + NO -> H2O + N

N + NO -> N2 + O

O + H2 -> H2O   

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H2 + 2NO + H2 --> N2 +2H2O

Reaction intermediates: N, O

Rate law for overall reaction will be dependent on slowest step only.

r = k [H2] [NO]

r = rate

k = rate constant

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