A⟶P is a first order reaction. At 300 K this reaction was started with [A]=0.5molL−1. The rate constant of reaction was 0.125min−1. The same reaction was started separately with [A]=1molL−1 at 300 K . The rate constant (in min−1 ) now is
Reaction A⟶P, first order at 300K,[A]0=0.5mol∕L Rate constant, k=0.125 min ‌−1 for first order reaction, k=‌ constant [ ‌T=‌ constant] ‌ Thus, k=0.125min−1