Which of the following anions would decolouri | vedclass

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(B) Acidified $KMnO_4$ is a strong oxidizing agent. It reacts with reducing agents to get reduced,resulting in the loss of its purple color. Among the

Vedclass · Accepted Answer

$S^{2-}$

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(B) Acidified $KMnO_4$ is a strong oxidizing agent. It reacts with reducing agents to get reduced,resulting in the loss of its purple color. Among the given anions,the sulfide ion $(S^{2-})$ acts as a reducing agent and is oxidized to elemental sulfur $(S)$ by $KMnO_4$. The balanced chemical equation is: $2KMnO_4 + 3H_2SO_4 + 5H_2S 	o K_2SO_4 + 2MnSO_4 + 8H_2O + 5S$

Which of the following anions would decolourise acidified $KMnO_4$ solution?

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