The rate constant of a reaction depends on

a) Temperature

b) Initial concentration of the reactants

c) Time of reaction

d) Extent of reaction

a)      Temperature

Exp:       It is a constant of particular reaction at a given temperature. It does not depend upon initial concentration of the reactants time of reaction and extent of reaction.

A

the rate constant depends on initial conc.of the reactants because by the formula of rate constant=initial conc./time taken to convert the reactants into products. It  depends on time also.

a.temperature

The rate constant will change with Temperature, use of catalyst and also when the unit of rate constant is changed. For zero order reaction t_y/x =(y/x) C₀/k or k = (y/x) C₀/t_y/x. Here also k does not change with change in C value.