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The time for half-life period of a certa...

The time for half-life period of a certain reaction A `rarr` Products is 1 h. When the initial concentration of the reactant A, is 2.0 mol `L^(-1)` . How much time does it take for its concentration to come from 0.50 mol `L^(-1)` to 0.25 mol `L^(-1)` , if it is a zero-order reaction?

A

1h

B

4 h

C

0.5 h

D

0.25 h

Text Solution

Verified by Experts

For a zero-order reaction , `t_(1//2) = [A]//2k` where [A] is the initial concentration.
So, `k = [A]//2t_(1//2) = 2//2 xx 1 = 1`. Also for zero-order reactio, `k = (x)/(t) rArr = ((0.50 - 0.25))/(1) = 0.25 h`
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