Video: Permanganate ion as an oxidizing agent I

In a kinetically slow reaction, purple permanganate ion oxidizes oxalate ion to carbon dioxide, itself being reduced to the colorless manganese(II) ion.

MnO4-(aq) + 8 H+(aq) + 5 e- ® Mn2+(aq) + 4 H2O(l)
C2O42-(aq) ® 2 CO2(g) + 2 e-