Home Chemistry Chemical Kinetics Rate law and Rate Constant The rate constant of a reaction is and the …
Chemistry Chemical Kinetics Rate law and Rate Constant Single Correct MCQ
Published on: August 13, 2026

The rate constant of a reaction is and the initial concentration is The half-life period is

A
400 sec
B
600 sec
C
800 sec
D
1200 sec

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The correct answer is:
B

The unit of rate constant shows that reaction is of first order. For first order reaction, half life is independent of initial conc. of the reactant. Thus,

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