The half-life of the reaction is independent of the initial concentration of

CHEMISTRY · Single correct · A Level · Chemistry · Rate equations · Rate equations

Problem

The half-life of the reaction

\mathrm{H_2O_2(aq)}\rightarrow\mathrm{H_2O(l)}+\mathrm{O_2(g)}

is independent of the initial concentration of

\mathrm{H_2O_2}

. The volume of

\mathrm{O_2}

gas after

20\,\text{min}

5\,\text{L}

1\,\text{atm}

and

27^\circ\text{C}

, and its volume after completion of the reaction is

50\,\text{L}

. The rate constant is (a)

\dfrac{1}{20}\log 10\,\text{min}^{-1}

(b)

\dfrac{2.303}{20}\log 10\,\text{min}^{-1}

(c)

\dfrac{2.303}{20}\log\!\left(\dfrac{50}{45}\right)\,\text{min}^{-1}

(d)

\dfrac{2.303}{20}\log\!\left(\dfrac{45}{50}\right)\,\text{min}^{-1}