The half life period of a first order chemical reaction is 6.93 minutes. The time required for the completion of 99 % of the chemical reaction will be (log 2 = 0.301)

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answer is 2.

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Detailed Solution

2.303×0.30106.93=2.303t99log100100-99 0.6936.93=4.606t99 t99=4.606×6.930.693=46.06 min

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