The decomposition reaction of A to B is a first-order reaction with a half-life of 2.42×103 seconds: A → 2B If the initial concentration of A is 0.163 M, how many minutes will it take for the concentration of A to be 66.8% of the initial concentration?

Explanation:

Hello,

In this case, since the rate equation turns out as shown below due to the first-order kinetics:

Its integration results:

However, the rate constant is computed by considering the given half-life time as follows:

In such a way, the required time in minutes to diminish the concentration by 66.8% of the initial turns out:

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explanation: