2 H2S + H2SO3 → 3 S + 3 H2O
This is an oxidation-reduction (redox) reaction:
2 S-II - 4 e- → 2 S0 (oxidation)
SIV + 4 e- → S0 (reduction)
H2S is a reducing agent, H2SO3 is an oxidizing agent (synproportionation (comproportionation)).
Reactants:
- H2S – Hydrogen sulfide
- Other names: D , Ihydrogen monosulfide|Dihydrogen sulfide|Sewer gas|Sulfane|Sulfurated hydrogen|Sulfureted hydrogen|Sulfuretted hydrogen|Sulfur hydride|Hydrosulfuric acid|Hydrothionic acid|Thiohydroxic acid|Sulfhydric acid}} , Hydrosulfuric acid
- 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.]
- H2SO3 – Sulfurous acid
Products: