3 Cu2S + 4 KClO3 → 6 CuO + 3 SO2 + 4 KCl
This is an oxidation-reduction (redox) reaction:
6 CuI - 6 e- → 6 CuII (oxidation)
3 S-II - 18 e- → 3 SIV (oxidation)
4 ClV + 24 e- → 4 Cl-I (reduction)
Cu2S is a reducing agent, Cu2S is a reducing agent, KClO3 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.]
- KCl