General Chemistry Online: FAQ: Reaction rates: What is the mechanism of the reaction between iodide ion and hydrogen peroxide?
Other reactions can occur here, and each of these reactions can be composed of a series of other steps. But these equations are the basis for the first order behavior.
The iodide-catalyzed decomposition of hydrogen peroxide. This reaction produces oxygen gas, but no triiodide ion.
where the first reaction is the rate-determining step- the same one seen in the iodine clock reaction.
General Chemistry Online! What is the mechanism of the reaction between iodide ion and hydrogen peroxide?