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The rate equation for a reaction AtoB is...

The rate equation for a reaction `AtoB` is `r=k[A]^(0)`. If the initial concentration of the reactant is a mol `dm^(-3)`, the half life period of the reaction is

A

k/a

B

a/k

C

2a/k

D

a/2k

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The correct Answer is:
D
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