Question

Acidified KMnO$_4$ oxidizes sulphite to:

• A. SO$_3^{2-}$
• B. SO$_4^{2-}$
• C. SO$_2$(g)
• D. S$_2$O$_8^{2-}$

Hint:

KMnO$_4$ in acidic conditions oxidizes sulphite to sulfate.

Answer 1

The Correct Option is B

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).