Consider the Following Mechanism for the Oxidation of Bromide Ions

question 52

Multiple Choice

Consider the following mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution. H⁺ + H₂O₂ ⇄ H₂O⁺−OH (rapid equilibrium) H₂O⁺−OH + Br⁻ → HOBr + H₂O (slow) HOBr + H⁺ + Br⁻ → Br₂ + H₂O (fast)
What is the overall reaction equation for this process?

• A)2H ₂O ⁺−OH + 2Br ⁻ → H ₂O ₂ + Br ₂ + 2H ₂O
• B)2H ⁺ + 2Br ⁻ + H ₂O ₂ → Br ₂ + 2H ₂O
• C)2H ⁺ + H ₂O ₂ + Br ⁻ + HOBr → H ₂O ⁺−OH + Br ₂ + H ₂O
• D)H ₂O ⁺−OH + Br ⁻ + H ⁺ → Br ₂ + H ₂O
• E)None of these choices are correct.

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