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k for a zero order reaction is 2 xx 10^(...

k for a zero order reaction is `2 xx 10^(-2)" mol "L^(-1) s^(-1)`. If the concentration of the reactant after 25 s is 0.5 M then the initial concentration must have been

A

0.5 M

B

1.25 M

C

12.5 M

D

1.0 M

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The correct Answer is:
D
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