The Mechanism for the First-Order Reaction 2H₂O₂(aq)  2H₂O

question 35

Multiple Choice

The mechanism for the first-order reaction 2H₂O₂(aq)  2H₂O( ) + O₂ 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)
Identify the catalyst in the reaction.

• A) H₂O₂
• B) OI^-
• C) I^-
• D) H₂O
• E) O₂

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