Question

Acidified KMnO_4 oxidizes sulphite to: 

• A. SO_3^{2-}
• B. SO_4^{2-}
• C. SO_2(g)
• D. S_2O_8^{2-}

Hint:

KMnO_4 in acidic conditions oxidizes sulphite to sulfate.

Answer 1

The Correct Option is D

Step 1: Understanding the oxidation reaction. In acidic conditions, potassium permanganate (KMnO_4) is a strong oxidizing agent that oxidizes sulphite (SO_3^{2-}) to sulfate (SO_4^{2-}). 

Step 2: Conclusion. Thus, the oxidation product is SO_4^{2-}, corresponding to option (B).