8 HCl + 2 HNO3 + 8 FeCl2 → 5 H2O + 8 FeCl3 + N2O
This is an oxidation-reduction (redox) reaction:
2 NV + 8 e- → 2 NI (reduction)
8 FeII - 8 e- → 8 FeIII (oxidation)
HNO3 is an oxidizing agent, FeCl2 is a reducing agent.
Reactants:
- 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.]
- 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.]
- FeCl2 – Iron(II) chloride , Iron dichloride
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