Chemistry Help Please!

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The decomposition of hydrogen peroxide is catalyzed by iodide ion. The catalyzed reaction is thought to proceed by a two-step mechanism:

1. H2O2(aq) + I(aq) → H2O(l) + IO(aq) (slow)
       
2. IO(aq) + H2O2(aq) → H2O(l) + O2(g) + I(aq) (fast)

a. Assuming that the first step of the mechanism is rate determining, predict the rate expression for the overall process.

b. Write the chemical equation for the overall process.

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