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A hypothetical reaction, A2 + B2rarr2AB ...

A hypothetical reaction, `A_2 + B_2rarr2AB` follows the following mechanism:
`A_2hArrA+A` …...............fast
`A+B_2rarrAB+B` …..........slow
`A+B `rarr` AB .................fast
The order of the overall reaction is

A

2

B

`3//2`

C

1

D

0

Text Solution

Verified by Experts

The correct Answer is:
B
Rate =k[A] [`B_2`]
But K=`([A]^2)/([A_2])` or [A] = `sqrt(K.[A_2])`
Rate =`k.sqrt(K)sqrt([A_2][B_2])=k.[A_2]^(1//2)[B_2]`
Order =`1+1/2=3//2`
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