Question

The rate constant of a first order reaction is 3 x 10^-6 per sec. If the initial concentration is 0.10 M, the initial rate of reaction is

(a) 3 x 10^-6 M s^-1

(b) 3 x 10^-5 M s^-1

(c) 3 x 10^-8 s^-1

(d) 3 x 10^-7 s^-1

Answer 1

Correct option (d) 3 x 10^-7 s^-1

Explanation:

For first order reaction,

rate = rate constant x concentration of reactant

.'. Initial rate = rate constant x Initial concentration

3 x 10^-6 x 0.10 = 3 x 10^-7 s^-1