Which rate la corresponds to the proposed mechanism for the decomposition of N2O

Question

Which rate la corresponds to the proposed mechanism for the decomposition of N2O Reaction: 2N2O ->N2+O Mechanism step 1: N2+O(slow) Step 2: N2+O2(fast) A. Rate=k[N2O] B. Rate=k[N2O]^2 C. Rate= k[N2O][O] D. Rate = k[ N2O] ^2[O] Which rate la corresponds to the proposed mechanism for the decomposition of N2O Reaction: 2N2O ->N2+O Mechanism step 1: N2+O(slow) Step 2: N2+O2(fast) A. Rate=k[N2O] B. Rate=k[N2O]^2 C. Rate= k[N2O][O] D. Rate = k[ N2O] ^2[O] Reaction: 2N2O ->N2+O Mechanism step 1: N2+O(slow) Step 2: N2+O2(fast) A. Rate=k[N2O] B. Rate=k[N2O]^2 C. Rate= k[N2O][O] D. Rate = k[ N2O] ^2[O]

Explanation / Answer

Ans A) rate = k[N2O]

The rate of the reaction and the rate law depends on the slowest step , i.e the rate determining step of the reaction.

Since here the step 1 , i.e N2O = N2 + O , is the slowest step , the rate law is given as :

rate = k[N2O]

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