Fe2S3 + 4 O2 → 2 FeO + 3 SO2
This is an oxidation-reduction (redox) reaction:
3 S-II - 18 e- → 3 SIV (oxidation)
2 FeIII + 2 e- → 2 FeII (reduction)
8 O0 + 16 e- → 8 O-II (reduction)
Fe2S3 is a reducing agent, Fe2S3 is an oxidizing agent, O2 is an oxidizing agent.
Reactants:
- Fe2S3
- O2
Products:
- FeO – Iron(II) oxide
- 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.]