The decomposition of a substance follows first-order kinetics

CHEMISTRY · Single correct · CBSE · Chemistry · Chemical Kinetics · Chemical Kinetics

Problem

The decomposition of a substance follows first-order kinetics. Its concentration is reduced to

\frac18

of its initial value in

24\,\text{min}

. The rate constant of the decomposition process is (a)

\frac{1}{24}\,\text{min}^{-1}

(b)

\frac{0.6932}{24}\,\text{min}^{-1}

(c)

\frac{2.303}{24}\log\left(\frac18\right)\,\text{min}^{-1}

(d)

\frac{2.303}{24}\log\left(\frac81\right)\,\text{min}^{-1}