4 O2 + 2 CuFeS2 → 3 SO2 + 2 FeO + Cu2S
This is an oxidation-reduction (redox) reaction:
2 CuII + 2 e- → 2 CuI (reduction)
3 S-II - 18 e- → 3 SIV (oxidation)
8 O0 + 16 e- → 8 O-II (reduction)
CuFeS2 is an oxidizing agent, CuFeS2 is a reducing agent, O2 is an oxidizing agent.
Reactants:
- O2
- CuFeS2
Products:
- 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.]
- FeO – Iron(II) oxide
- Cu2S – Copper(I) Sulphide