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

The time for half life period of a certain reaction A `rarr` Products is 1 hour. 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 to 0.25 mol `L^-1`? if it is a zero order reaction?

A

0.25 h

B

1 h

C

4h

D

0.5 h.

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