10 SCN- + 14 MnO4- + 32 H+ → 5 (CN)2 + 14 (Mn)2+ + 10 SO42- + 16 H2O
This is an oxidation-reduction (redox) reaction:
14 MnVII + 70 e- → 14 MnII (reduction)
10 S-II - 80 e- → 10 SVI (oxidation)
10 CIV + 20 e- → 10 CII (reduction)
MnO4- is an oxidizing agent, SCN- is a reducing agent, SCN- is an oxidizing agent.