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For the elementary reaction M rarr N, t...

For the elementary reaction M `rarr` N, the rate of disappearance of M increases by a factor of 8 upon doubling the concentration of M. The order of the reaction with respect to M is:

A

4

B

3

C

2

D

1

Text Solution

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The correct Answer is:
B
Consider rate (r ) =k `[M]^(n)` where n is order of reaction `(r_(1))/(r_(2))=1/8=[M]^(n)/[2M]^(n) rarr n=3`
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