2 FeS + 4 HNO3 + H2SO4 → 3 H2 + 4 NO + Fe2(SO4)3
This is an oxidation-reduction (redox) reaction:
2 S-II - 16 e- → 2 SVI (oxidation)
6 HI + 6 e- → 6 H0 (reduction)
4 NV + 12 e- → 4 NII (reduction)
2 FeII - 2 e- → 2 FeIII (oxidation)
Reactants:
- FeS
- HNO3 – Nitric acid
- Other names: Aqua fortis , Spirit of niter , Eau forte
- Appearance: Colorless, yellow or red fuming liquid ; Colourless-to-yellow liquid with pungent odour ; Colorless, yellow, or red, fuming liquid with an acrid, suffocating odor. [Note: Often used in an aqueous solution. Fuming nitric acid is concentrated nitric acid that contains dissolved nitrogen dioxide.]
- H2SO4 – Sulfuric acid
Products: