5 SO2 + 2 HMnO4 + 2 H2O → 3 H2SO4 + 2 MnSO4
This is an oxidation-reduction (redox) reaction:
2 MnVII + 10 e- → 2 MnII (reduction)
5 SIV - 10 e- → 5 SVI (oxidation)
HMnO4 is an oxidizing agent, SO2 is a reducing agent.
Reactants:
- SO2 – Sulfur dioxide
- Other names: Sulfurous anhydride , Sulphur dioxide , Sulfurous acid anhydride
- Appearance: Colorless gas ; Colourless gas or compressed liquefied gas with pungent odour ; Colorless gas with a characteristic, irritating, pungent odor. [Note: A liquid below 14°F. Shipped as a liquefied compressed gas.]
- HMnO4
- H2O – Water, oxidane
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