16 O2 + SO2 → SO34
This is an oxidation-reduction (redox) reaction:
SIV - 64 e- → SLXVIII (oxidation)
32 O0 + 64 e- → 32 O-II (reduction)
SO2 is a reducing agent, O2 is an oxidizing agent.
- 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.]