The rate constant of the reaction A to B...

The rate constant of the reaction A to B is `0.6xx10^(-3)` mole per second. If the concentration of A is `5` M, then concentration of B after `20` minutes is :

A

`0.36` M

B

`0.72` M

C

`1.08` M

D

`3.60` M

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The correct Answer is:

B

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