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The mechanism of the reaction A+2B rarr ...

The mechanism of the reaction `A+2B rarr C+D` is:
Step I: `A+B underset(k_(2))overset(k_(1))hArr I`
Step II: `B+I overset(k_(3))rarr C+D`
In the first step is a fast equilibruim , then the incorrect statement is :

A

Order of reacton with respect to A is 1.

B

Order of reacton with respect to B is 2.

C

Overall rate of reaction is ,`r=K_(3).[A][B]^(2)`

D

Rates of forward and backward reaction of step I is much greater than the rate of reaction of step II.

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The correct Answer is:
C
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