Cl2 (g) + H2S (g) → 2 HCl (g) + S (s)
This is an oxidation-reduction (redox) reaction:
S-II - 2 e- → S0 (oxidation)
2 Cl0 + 2 e- → 2 Cl-I (reduction)
H2S is a reducing agent, Cl2 is an oxidizing agent.
Reactants:
- Cl2
- 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.]
- Other names: Dihydrogen monosulfide
Products:
- HCl – Chlorane
, Hydrogen chloride
- Other names: Hydrochloric acid
, Hydrochloric acid gas
, HCl
- Appearance: Colorless, transparent liquid, fumes in air if concentrated
; Colorless gas
; Colourless compressed liquefied gas with pungent odour
; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
- Other names: Hydrochloric acid
- S