5 SO22- + 12 H3O+ + 4 MnO4- → 4 (Mn)2+ + 5 SO42- + 18 H2O
This is an oxidation-reduction (redox) reaction:
4 MnVII + 20 e- → 4 MnII (reduction)
5 SII - 20 e- → 5 SVI (oxidation)
MnO4- is an oxidizing agent, SO22- is a reducing agent.
Reactants:
Products: