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For reaction aA rarr xP, when [A] = 2.2 ...

For reaction `aA rarr xP`, when `[A] = 2.2 mM`, the rate was found to be `2.4mM s^(-1)`. On reducing concentration of `A` to half, the rate changes to `0.6 mM s^(-1)`. The order of reaction with respect to `A` is

A

1.5

B

`2.0 `

C

`2.5`

D

`3.0`

Text Solution

Verified by Experts

The correct Answer is:
B
`r=k[A]^(n)`
`2.4=kxx(2.2)^(n)" …(i)" and " "0.6=k xx (1.1)^(n)" ….(ii)`
(i)/(ii) `rArr 4=(2)^(n) rArr n=2`
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