Fe + H2S → H2 + FeS
This is an oxidation-reduction (redox) reaction:
2 HI + 2 e- → 2 H0 (reduction)
Fe0 - 2 e- → FeII (oxidation)
H2S is an oxidizing agent, Fe 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.]