A reaction, which is second order, has a rate constant of . If the initial…

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

Problem

A reaction, which is second order, has a rate constant of

0.002\ \text{L mol}^{-1}\ \text{s}^{-1}

. If the initial concentration of the reactant is

0.2\ \text{M}

, how long will it take for the concentration to become

0.04\ \text{M}

? (a)

1000\ \text{s}

(b)

400\ \text{s}

(c)

200\ \text{s}

(d)

10{,}000\ \text{s}