5 H2S + 8 HBrO3 → 5 H2SO4 + 4 H2O + 4 Br2
This is an oxidation-reduction (redox) reaction:
8 BrV + 40 e- → 8 Br0 (reduction)
5 S-II - 40 e- → 5 SVI (oxidation)
HBrO3 is an oxidizing agent, H2S is a reducing agent.
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.]
- HBrO3 – Bromic acid
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