5 FeC21/2O2 + 7 MnVIIO4- + 36 H+ 5 Fe3+ + 7 (MnII)2+ + 10 CIVO2 + 18 H2O

This is an oxidation-reduction (redox) reaction:

7 MnVII + 35 e- 7 MnII (reduction)

10 C1/2 - 35 e- 10 CIV (oxidation)

MnO4- is an oxidizing agent, FeC2O2 is a reducing agent.