2 SO2 + 3 O2 + 2 H2O → 2 H2SO6
This is an oxidation-reduction (redox) reaction:
2 SIV - 12 e- → 2 SX (oxidation)
6 O0 + 12 e- → 6 O-II (reduction)
SO2 is a reducing agent, O2 is an oxidizing 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.]
- O2
- H2O – Water, oxidane
Products:
- H2SO6