H2S + H2O2 → S + 2H2O
The reaction manifests the oxidizing nature of H2O2 as it oxidizes S from -2 to 0 oxidation states.
- H2S is a reducing agent, H2O2 is an oxidizing agent.
- This is an oxidation-reduction (redox) reaction
- Hydrogen sulphide is a colourless compressed liquefied gas with the characteristic odour of rotten eggs