What forms during the titration of FeCl₂ with KMnO₄?
During the titration of FeCl₂ with KMnO₄ in an acidic medium, Fe²⁺ ions are oxidized to Fe³⁺, while MnO₄⁻ is reduced to Mn²⁺. The overall balanced chemical reaction is:
5Fe2++MnO4−+8H+→5Fe3++Mn2++4H2O5Fe^ {2+} + MnO_4^- + 8H^+ \right arrow 5Fe^ {3+} + Mn^ {2+} + 4H_2O
This redox reaction is a common method for determining the concentration of Fe²⁺ in a solution.