4 NaClO (l) + H2S (g) → 4 NaCl (aq) + H2SO4 (aq)
This is an oxidation-reduction (redox) reaction:
S-II - 8 e- → SVI (oxidation)
4 ClI + 8 e- → 4 Cl-I (reduction)
H2S is a reducing agent, NaClO is an oxidizing agent.
Reactants:
- NaClO – Sodium hypochlorite
- Other names: A , Ntiformin|Bleach|Chloride of soda}}'In dilution:'C , Arrel-Dakin solution|Modified Dakin's solution|Surgical chlorinated soda solution}}
- Appearance: Greenish-yellow solid (pentahydrate) ; Clear slightly yellow solution with characteristic odour ; Clear slightly yellow solution with characteristic odour
- 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.]
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