5 C-IIH3CIIOOH + 8 KMnVIIO4 + 12 H2SO4 8 MnIISO4 + 4 K2SO4 + 10 CIVO2 + 22 H2O

This is an oxidation-reduction (redox) reaction:

8 MnVII + 40 e- 8 MnII (reduction)

5 CII - 10 e- 5 CIV (oxidation)

5 C-II - 30 e- 5 CIV (oxidation)

Change the oxidation states