2 Cu2O + CuS → 5 Cu + SO2
This is an oxidation-reduction (redox) reaction:
CuII + 2 e- → Cu0 (reduction)
4 CuI + 4 e- → 4 Cu0 (reduction)
S-II - 6 e- → SIV (oxidation)
CuS is an oxidizing agent, Cu2O is an oxidizing agent, CuS is a reducing agent.
Reactants:
Products:
- Cu
- 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.]