Question

The rate constant of a reaction is 0.69 x 10^-2 min^-1 and the initial concentration is 0.2 mol L^-1 . The half-life period is

(a) 800 sec

(c) 400 sec

(b) 600 sec

(d) 6024 sec

Answer 1

Correct option  (d) 6024 sec

Explanation:

Rate constant: 0.69 x 10^-2 min^-1

This unit (i.e. min^-1) is characteristics of first order reaction. For first order reaction, half-life time is given as: