5 CuCl2 + 2 KMnO4 + 8 H2SO4 → 5 CuSO4 + 2 MnSO4 + K2SO4 + 5 Cl2 + 8 H2O
This is an oxidation-reduction (redox) reaction:
2 MnVII + 10 e- → 2 MnII (reduction)
10 Cl-I - 10 e- → 10 Cl0 (oxidation)
KMnO4 is an oxidizing agent, CuCl2 is a reducing agent.