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Molarity

The half life...

Question

The half life period of a substance is 50min at a certain initial concentration .When concentration is reduced to one half ,half life is found to be 25 min .What is the order of reaction?

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Solution

It is given that the half life of the compound is reduced to half (50 mins. to 25 mins.) when initial concentration is reduced to half. This means that half life is directly proportional to initial concentration. This is in the case of zero order reaction
So, the order of the reaction is zero.

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