8 Fe (s) + 15 H2SO4 (aq) → 3 H2S (g) + 4 Fe2(SO4)3 (s) + 12 H2O (l)
This is an oxidation-reduction (redox) reaction:
3 SVI + 24 e- → 3 S-II (reduction)
8 Fe0 - 24 e- → 8 FeIII (oxidation)
H2SO4 is an oxidizing agent, Fe is a reducing agent.
Reactants:
Products:
- 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.]
- Fe2(SO4)3 – Iron(III) sulfate
- H2O – Water, oxidane