Another proposed mechanism problem:

Question

H2O2 + I ---> H2O +IO slow
H2O2 + IO ---> H2O + O2 + I fast

Which of the following statements in incorrect?
a.) IO is a catalyst
b.) I is a catalyst
c.) The net reaction is 2H2O2 ---> 2H2O + O2

I would choose B, since IO is shown as both a product and reactant, but I don't know if my reasoning is correct.