10 FeCl2 (aq) + 6 KMnO4 (aq) + 24 H2SO4 (aq) → 5 Fe2(SO4)3 (s) + 10 Cl2 (g) + 6 MnSO4 (aq) + 3 K2SO4 (aq) + 24 H2O (l)
This is an oxidation-reduction (redox) reaction:
6 MnVII + 30 e- → 6 MnII (reduction)
20 Cl-I - 20 e- → 20 Cl0 (oxidation)
10 FeII - 10 e- → 10 FeIII (oxidation)
KMnO4 is an oxidizing agent, FeCl2 is a reducing agent, FeCl2 is a reducing agent.
This is a precipitation reaction: Fe2(SO4)3 is the formed precipitate.
This is a gas evolution reaction, Cl2 is the formed gas.