The Mechanism for the Reaction 2 H₂O₂(aq) $\rightarrow$ 2 H₂O(l) + O₂(g) in the Presence of I^-(aq) Is

question 123

Multiple Choice

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

• A)zeromolecular
• B)unimolecular
• C)bimolecular
• D)termolecular
• E)More information is needed.

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