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How does half life period of a first order reaction vary with temperature?

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How does half life period of a first order reaction vary with temperature?

(a) It increases

(b) It decreases

(c) It remains the same

(d) Both increases as well as decrease

The question was asked in an interview for job.

Question is taken from Effect of Temperature on reaction rate in chapter Reaction Dynamics of Engineering Chemistry I

1 Answer

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Best answer
The correct choice is (a) It increases

Easy explanation: Half-life period of a first order reaction is directly proportional to the rate constant. So, it increases with increase in temperature.

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