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For the first-order reaction (C=C(0)e^(-...

For the first-order reaction `(C=C_(0)e^(-k_(1)^(t)))` and `T_(av)=k_(1)^(-1)`. After two average lives concentration of the reactant is reduced to :

A

`25%`

B

`75%`

C

`(100)/(e)%`

D

`(100)/(e^(2))%`

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The correct Answer is:
D
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