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A reaction A(2)+B(2)rarr 2AB occurs by t...

A reaction `A_(2)+B_(2)rarr 2AB` occurs by the following mechanism:
`A_(2)rarr A+A`… (slow)
`A+B_(2)rarr AB+B`… (fast)
`A+Brarr AB` … (fast)
Its order would be

A

`3//2`

B

`1`

C

Zero

D

`2`

Text Solution

Verified by Experts

The correct Answer is:
b
The rate expression is derived for slowest step of mechanism.
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