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

question 164

Multiple Choice

The mechanism for the first-order reaction
2H₂O₂(aq) $\rightarrow$ 2H₂O(l) + O₂ in the presence of I^-(aq) is proposed to be:
Step 1: H₂O₂(aq) + I^-(aq) $\rightarrow$ H₂O( $\ell$ ) + OI^-(aq)
(slow)
Step 2: H₂O₂(aq) + OI^-(aq) $\rightarrow$ H₂O( $\ell$ ) + 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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