NEET Chemistry Chemical Kinetics Questions Solved


For a first order reaction A Products, the rate of reaction at [A]=0.2 M is 1.0 x10-2 mol litre-1 min-1. The half life period for the reaction is:

(a) 832 sec

(b) 440 sec

(c) 416 sec

(d) 14 sec

(a) r = K[A]

     K = 10-2/0.2 = 5x10-2;

     Now, t1/2 = 0.693/K = 0.693/5x10-2 = 13.86 min = 832 sec

Difficulty Level:

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