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The mechanism for the reaction 2H2O2(aq) 2H2O( ) + O2(g) in the presence of I-(aq) is proposed to be: Step 1: H2O2(aq) + I-(aq) H2O(
) + OI-(aq)
(slow)
Step 2: H2O2(aq) + OI-(aq) H2O( ) + O2(g) + I-(aq)
(fast)
What is the molecularity of the rate-determining step?
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