2 PbS + 3 O2 → 2 PbO + 2 SO2
This is an oxidation-reduction (redox) reaction:
2 S-II - 12 e- → 2 SIV (oxidation)
6 O0 + 12 e- → 6 O-II (reduction)
PbS 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.]