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Decomposition of hydrogen peroxide in al...

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")`
Calculate the order of the reaction.

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Order of the reaction is 2.
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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 .

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