A reaction has a rate constant of

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

Problem

0.5\ \text{mol}^{-1}\text{dm}^3\text{min}^{-1}

. If the initial concentration of the reactant is

0.2\ \text{mol dm}^{-3}

, the half-life of the reaction is (1)

1.4\ \text{min}

(2)

10\ \text{min}

(3)

15\ \text{min}

(4)

20\ \text{min}