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The unit of rate constant obeying the ra...

The unit of rate constant obeying the rate expression `r=k[A]'[B]^(2//3)` is :

A

`"mol"^(-2//3) "litre"^(2//3) "time"^(-1)`

B

`"mol"^(2//3) "litre"^(-2//3) "time"^(-1)`

C

`"mol"^(-5//3) "litre"^(5//3) "time"^(-1)`

D

none of these

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The correct Answer is:
A
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