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The reaction 2KBr + I₂ → 2KI + Br₂ cannot occur. What is the reason behind this?

1. The reaction cannot proceed because iodide cannot oxidize bromide to bromine.
2. This is due to the higher oxidation potential of iodine compared to bromine.
3. The reaction 2KBr + I₂ → 2KI + Br₂ is not feasible.
4. Bromide ions cannot be converted to bromine by iodine.

Correct answer: The reaction cannot proceed because iodide cannot oxidize bromide to bromine.

Solution

The reaction is not possible because iodine (I₂) has a higher reduction potential than bromine (Br₂), making it less likely to oxidize Br⁻ to Br₂.

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