([Fe(CN)6])4- + 12 MnO4- + 36 H+ → Fe2+ + 6 NO3- + 12 (Mn)2+ + 6 CO2 + 18 H2O
This is an oxidation-reduction (redox) reaction:
12 MnVII + 60 e- → 12 MnII (reduction)
6 CII - 12 e- → 6 CIV (oxidation)
6 N-III - 48 e- → 6 NV (oxidation)
MnO4- is an oxidizing agent, [Fe(CN)6]4- is a reducing agent, [Fe(CN)6]4- is a reducing agent.