MnCl2 (aq) → Mn (s) + Cl2 (g)
This is an oxidation-reduction (redox) reaction:
MnII + 2 e- → Mn0 (reduction)
2 Cl-I - 2 e- → 2 Cl0 (oxidation)
MnCl2 is an oxidizing agent, MnCl2 is a reducing agent.
This is a precipitation reaction: Mn is the formed precipitate.
This is a gas evolution reaction, Cl2 is the formed gas.