2 KMnO4 (aq) + 12 FeSO4 (aq) + 9 H2SO4 (aq) → K2SO3 (aq) + 2 MnSO4 (aq) + 6 Fe2(SO4)3 (s) + 9 H2O (l)
This is an oxidation-reduction (redox) reaction:
2 MnVII + 10 e- → 2 MnII (reduction)
SVI + 2 e- → SIV (reduction)
12 FeII - 12 e- → 12 FeIII (oxidation)
This is a precipitation reaction: Fe2(SO4)3 is the formed precipitate.