The reaction : takes place in following steps:

CHEMISTRY · Subjective · AP · Chemistry · Kinetics · Kinetics

Problem

The reaction :

\text{OCl}^- + \text{I}^- \xrightarrow{\text{OH}^-} \text{OI}^- + \text{Cl}^-

takes place in following steps: (i)

\text{OCl}^- + \text{H}_2\text{O} \xrightleftharpoons[K_2]{K_1} \text{HOCl} + \text{OH}^-

(fast) (ii)

\text{I}^- + \text{HOCl} \xrightarrow{K_3} \text{HOI} + \text{Cl}^-

(slow) (iii)

\text{OH}^- + \text{HOI} \xrightleftharpoons[K_2]{K_1} \text{H}_2\text{O} + \text{OI}^-

(fast) Write the rate expression in terms of rate of consumption of

\text{I}^-