Question

The first order reaction has a half life period of 34.6 5 seconds the rate constant is

Answer 1

half life=0.693/rate constant.so rate constant=0.693/34.65

Answer 2

The rate constant for the given first order reaction is $0.02sec^{-1}$

Explanation:

The equation used to calculate rate constant from given half life for first order kinetics:

$t_{1/2}=\frac{0.693}{k}$

We are given:

$t_{1/2}=34.65\text{ seconds}$

Putting values in above equation, we get:

$k=\frac{0.693}{34.65}=0.02sec^{-1}$

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