KMnO₄ can be prepared from K₂MnO₄ as per the reaction: 3MnO₄²⁻ + 2H₂O ⇌ 2MnO₄⁻ + MnO₂ + 4OH⁻. The reaction can go to completion by removing OH⁻ ions by adding

Question

Dr. Abubacker · Accepted Answer

[Solution from source] CO₂ is weakly acidic and neutralises OH⁻ (forming carbonate) without reacting with the permanganate, pushing the equilibrium to the right. HCl and SO₂ are reducing agents that would be oxidised by MnO₄⁻, and KOH would add OH⁻ and push the reaction backwards. Answer (3).

Q. KMnO₄ can be prepared from K₂MnO₄ as per the reaction: 3MnO₄²⁻ + 2H₂O ⇌ 2MnO₄⁻ + MnO₂ + 4OH⁻. The reaction can go to completion by removing OH⁻ ions by adding

Explanation

Reviewed by Dr. Abubacker

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