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Q.

A molecule undergoes two independent first order reactions whose respective half lives are 12 min and 3 min. If both the reactions are occurring then the time taken for the 50% consumption of the reactant is ______min. (Nearest integer)

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Detailed Solution

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$\begin{array}{l} \frac{1}{t_{1 / 2}} = \frac{1}{12} + \frac{1}{3} = \frac{5}{12} \\ t_{1 / 2} = \frac{12}{5} = 2.4 near integer 2 \end{array}$

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A molecule undergoes two independent first order reactions whose respective half lives are 12 min and 3 min. If both the reactions are occurring then the time taken for the 50% consumption of the reactant is ______min. (Nearest integer)