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For the reaction H2SO3(aq) + Sn4+(aq) + H2O(l) → Sn2+(aq) + HSO4−(aq) + 3H+(aq), which statement is true?

1. Sn4+ acts as the oxidizing agent since it is oxidized
2. Sn4+ acts as the reducing agent since it is oxidized
3. H2SO3 acts as the reducing agent since it is oxidized
4. H2SO3 acts as the reducing agent since it is reduced

Correct answer: Sn4+ acts as the reducing agent since it is oxidized

Solution

The correct option is accurate because Sn4+ is reduced to Sn2+, meaning it gains electrons, while H2SO3 is oxidized, losing electrons. Therefore, Sn4+ is the reducing agent in this reaction.

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