Question

If 'a' is the initial concentration of a substance which reacts according to zero order kinetics and K is rate constant, the time for the reaction to go to completion is:

• A. a/K
• B. 2/Ka
• C. K/a
• D. 2K/a

Answer 1

The correct option is A a/K

For zero order reaction, $K=\frac{x}{t}$
if $x=a$ (complete reactant to react);
$t=\frac{a}{K}$.