MnIVO2-II + 6 NaCl-I + 3 H2SO4-II 2 HH2O-III + MnIICl2-I + 3 Na2SO4-II + 2 Cl20

This is an oxidation-reduction (redox) reaction:

MnIV + 2 e- MnII (reduction)

4 Cl-I - 4 e- 4 Cl0 (oxidation)

2 O-II + 2 e- 2 O-III (reduction)