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The unit of rate constant for 2nd order ...

The unit of rate constant for 2nd order reaction is

A

mole `lit^-1` `sec^-1`

B

`mol^-1` lit `sec^-1`

C

`mol^-1 lit^-1 sec^-1`

D

`mol^2lit^-2 sec^-1`

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The correct Answer is:
B
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