K2Cr2O7 + 2 H2S + 5 H2SO4 → 7 H2O + 2 KSO4 + Cr2(SO4)3 + 2 S
This is an oxidation-reduction (redox) reaction:
2 S-II - 4 e- → 2 S0 (oxidation)
2 S-II - 18 e- → 2 SVII (oxidation)
2 SVI + 12 e- → 2 S0 (reduction)
2 SVI - 2 e- → 2 SVII (oxidation)
2 CrVI + 6 e- → 2 CrIII (reduction)
H2S is a reducing agent, H2S is a reducing agent, H2SO4 is an oxidizing agent, H2SO4 is a reducing agent, K2Cr2O7 is an oxidizing agent.
Reactants:
- K2Cr2O7 – Potassium dichromate(VI)
- 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.]
- H2SO4 – Sulfuric acid
Products:
Warning: Unknown compound 'KSO4'