PbS (s) + O2 (g) → Pb (s) + SO2 (aq)
This is an oxidation-reduction (redox) reaction:
PbII + 2 e- → Pb0 (reduction)
S-II - 6 e- → SIV (oxidation)
2 O0 + 4 e- → 2 O-II (reduction)
PbS is an oxidizing agent, PbS is a reducing agent, O2 is an oxidizing agent.
Reactants:
- PbS
- O2
Products:
- Pb
- 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.]