The rate of first order reaction A->P is 0.01M/s when the reactant concentration is 0.2 molar.find rate constant of reaction Share with your friends Share 0 Vartika Jain answered this Dear Student, A → PFor first order reaction, Rate = k[A]So, 0.01 M/s=k(0.2 M)or, k=0.01 M/s0.2 M=0.05 s-1 -1 View Full Answer