The rate constant of a first order reaction is 3×10−6 per second. If the initial concentration is 0.10 M, the initial rate of reaction is

Given: Rate constant of the first order reaction (K)=3×10−6 per sec and initial concentration [A]=0.10 M. We know that initial rate r=K[A]=3×10−6×0.10=3×10−7 Ms−1.