The rate constant of a first order reaction is `3 xx 10^(-6)` per second. If the initial concentration is `0.10 M`, the initial rate of reaction is

Options

A. `3 xx 10^(-5) M s^(-1)`
B. `3 xx 10^(-6) M s^(-1)`
C. `3 xx 10^(-8) Ms^(-1)`
D. `3 xx 10^(-7) M s^(-1)`

Answer

d

Explanation

Given : Rate constant of the first order reaction `(k) = 3 xx 10^(-6)` per sec and initial concentration
`[A] = 0.10` M . We know that initial rate constant
`k [A] = 3 xx 10^(-6) xx 0.10 = 3 xx 10^(-7) Ms^(-1)`.