H2S + 3 CuO → H2O + SO2 + 3 Cu
This is an acid-base reaction (neutralization): H2S is an acid, CuO is a base.
This is an oxidation-reduction (redox) reaction:
3 CuII + 6 e- → 3 Cu0 (reduction)
S-II - 6 e- → SIV (oxidation)
CuO is an oxidizing agent, H2S is a reducing agent.
- H2S – Hydrogen sulfide
- Other names: Dihydrogen monosulfide , Dihydrogen sulfide , Sewer gas
- Appearance: Colorless gas ; Colourless compressed liquefied gas with characteristic odour of rotten eggs ; Colorless gas with a strong odor of rotten eggs. [Note: Sense of smell becomes rapidly fatigued & can NOT be relied upon to warn of the continuous presence of H2S. Shipped as a liquefied compressed gas.]
- CuO – Copper(II) oxide
- H2O – Water, oxidane
- 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.]