Decomposition of hydrogen peroxide in alkaline medium in presence of iodide (I^(-))catalyst occurs according to the equation:2H_(2)O_(2)underset("alkali")overset(I^(-))rarr2H_(2)O(l)+O_(2)(g) A proposed mechanism for this reaction involves the following steps : Step-I : H_(2)O_(2)(l)+I^(-)(aq)rarrH_(2)O(l)+IO^(-)(aq)("slow") Step-II : H_(2)O_(2)(l)+IO^(-)(aq)rarrH_(2)O(l)+IO^(-)(aq)+O_(2)(g)("fast")Write rate law for the reaction .

Decomposition of hydrogen peroxide in alkaline medium in presence of i

1.	Decomposition of hydrogen peroxide in alkaline medium in presence of iodide (I^(-))catalyst occurs according to the equation:2H_(2)O_(2)underset("alkali")overset(I^(-))rarr2H_(2)O(l)+O_(2)(g) A proposed mechanism for this reaction involves the following steps : Step-I : H_(2)O_(2)(l)+I^(-)(aq)rarrH_(2)O(l)+IO^(-)(aq)("slow") Step-II : H_(2)O_(2)(l)+IO^(-)(aq)rarrH_(2)O(l)+IO^(-)(aq)+O_(2)(g)("fast")Write rate law for the reaction .
Answer» Solution :Rate EQUATION of a reaction=rate equation of the SLOWEST STEP of the reaction. Hence , the rate equation of the reaction `=k[H_(2)O_(2)][I^(-)]`