3 FeCl2 + 10 HNO3 → 3 Fe(NO3)3 + NO + 6 HCl + 2 H2O
This is an oxidation-reduction (redox) reaction:
NV + 3 e- → NII (reduction)
3 FeII - 3 e- → 3 FeIII (oxidation)
HNO3 is an oxidizing agent, FeCl2 is a reducing agent.
Reactants:
- FeCl2 – Iron(II) chloride , Iron dichloride
- 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.]
Products:
- Fe(NO3)3 – Iron(III) nitrate
- NO – Nitrogen monoxide , Oxidonitrogen(•) (additive)
- HCl – Chlorane , Hydrogen chloride
- Other names: Hydrochloric acid , M , Uriatic acid
- Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
- H2O – Water, oxidane