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A proposed mechanism for the catalysed d...

A proposed mechanism for the catalysed decomposition of aqueous `H_2O_2` is
`H_2O_2 + I^(-) overset(k_1)(to) H_2O+ IO^(-)`
`H_2O_2 + IO^(-) overset(k_2)(to) H_2O + O_2 + I^(-)`
where `k_2 gt gt k_1` . Derive the rate law for the reaction.

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`- (d[H_2O_2])/(dt) = k_1[H_2O_2][I^(-)] `
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