(k1k2)[A]
(k1+k2)[A
k1k2[A
(k1−k2)[A
Correct option is A (k1k2)[A]Solution:- (A)(k1k2)[A]A→k1B→k2CAccording to given question,d[B]/dt=0=K1[A]−K2[B]→[B]=K1/K2[A]