Ferrous and ferric ions in solution may be di | vedclass

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Question

(C) The correct answer is $(C)$.Ferrous ions $(Fe^{2+})$ can be oxidized to ferric ions $(Fe^{3+})$ by acidified potassium permanganate $(KMnO_4)$,whi

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Acidified solution of potassium permanganate

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(C) The correct answer is $(C)$.Ferrous ions $(Fe^{2+})$ can be oxidized to ferric ions $(Fe^{3+})$ by acidified potassium permanganate $(KMnO_4)$,which causes the purple color of the permanganate solution to discharge (decolorize).$5Fe^{2+} + MnO_4^- + 8H^+ \rightarrow 5Fe^{3+} + Mn^{2+} + 4H_2O$Ferric ions $(Fe^{3+})$ are already in their higher oxidation state and do not react with acidified $KMnO_4$,so the purple color remains unchanged.Thus,acidified $KMnO_4$ acts as a distinguishing reagent.

Ferrous and ferric ions in solution may be distinguished by using

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