A hypothetical reaction A2 + B2 - 2AB Follows mechanism as given below: A2 ⇌ A + A.............(fast) with kf and kb A + B2 - AB + B.............(slow) with k1 A + B - AB.............(fast) with k2

Question

A hypothetical reaction A2 + B2 -> 2AB Follows mechanism as given below:
A2 ⇌ A + A.............(fast) with kf and kb
A + B2 -> AB + B.............(slow) with k1
A + B -> AB.............(fast) with k2
The order of overall reaction is

Prashant Kotian · Accepted Answer

Correct answer: C.   2 r k A B  & c k     2 A A A    1/2 1/2 2 A K A   Thus       1/2 1/2 1/2 c 2 2 2 2 r = K.K A B = K’ A B Hence order reaction s 3/2

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