Question

How does acidified potassium permanganate solution react with $Fe^{2+}$ ions? Write ionic equation.

Hint:

In acidic medium, KMnO\textsubscript{4} gets reduced to Mn\textsuperscript{2+}; Fe\textsuperscript{2+} acts as the reducing agent.

Answer 1

Step 1: KMnO₄ in acidic medium acts as a strong oxidizing agent.
Step 2: Fe²⁺ is oxidized to Fe³⁺, and MnO₄^– is reduced to Mn²⁺.
Ionic equation:
\[ \text{MnO}_4^- + 8H^+ + 5Fe^{2+} \rightarrow Mn^{2+} + 5Fe^{3+} + 4H_2O \]