Cu2S + 2 O2 → 2 CuO + SO2
This is an oxidation-reduction (redox) reaction:
2 CuI - 2 e- → 2 CuII (oxidation)
S-II - 6 e- → SIV (oxidation)
4 O0 + 8 e- → 4 O-II (reduction)
Cu2S is a reducing agent, Cu2S is a reducing agent, O2 is an oxidizing agent.
Reactants:
Products:
- CuO – Copper(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.]