Chemistry - Salt Analysis Question with Solution | TestHub

Explain the question:

Identify the anion decolourising acidified KMnO₄ .

Concept:

Redox reactions with Permanganate.

Solution:

Acidified KMnO₄ is a strong purple oxidizing agent that gets decolourised when reduced to Mn²⁺ . It requires a reducing agent in a lower oxidation state to react.

Sulfite SO₃^2-contains sulfur in the +4 oxidation state, which can be easily oxidized to the +6 state SO₄^2-.

are already in their highest oxidation states and cannot be oxidized further by KMnO₄.

Final Answer: Option (C).