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| 1. |
what is the half life of first order reaction if time required to decrease concentration of reactant from 0.8 to 0.2M is 12h? |
| Answer» CONCENTRATION is REDUCED to 25%. It means it takes two half-lives to decrease the concentration of reactant from 0.8 M to 0.2 M in first-order reaction. Hence, half-life of the reaction is 12/2 = 6 HOURS. | |