11. Conservation of Mass,       Charge, and Energy   Previous PageNext Page
       Conservation of Electrons

The corresponding equation for acidic solutions can be obtained by adding enough hydrogen ions to each side to eliminate the hydroxide ions:

Potassium permanganate, , is a common inorganic oxidizing agent, which becomes reduced to manganous ion, Mn, in acidic solution. Write a balanced equation for the reaction in which permanganate oxidizes ferrous iron, Fe2+, to ferric ion, Fe3+.


In the permanganate ion manganese has an oxidation number of +7 which decreases to +2 in the manganous ion, a change of -5. Iron increases in oxidation number by one:

The tetrahedral permanganate ion

Formula MnO4-
  Page 16 of 37 HomeGlossary