Question

The reaction 2 H2O2 --> 2 H2O + O2 follows the mechanism: Step 1: H2O2 (aq)...

The reaction 2 H2O2 --> 2 H2O + O2 follows the mechanism:
Step 1: H2O2 (aq) + I-(aq) --> H2O(l) + IO-(aq) SLOW   
Step 2: IO-(aq) + H2O2(aq) --> H2O(l) + O2(g) + I-(aq) FAST
What is the molecularity overall?

A. termolecular
B. bimolecular
C. cannot be determined
D. unimolecular

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