FeI2 + 4 HNO3 → Fe(NO3)3 + I2 + NO + 2 H2O
This is an oxidation-reduction (redox) reaction:
2 I-I - 2 e- → 2 I0 (oxidation)
NV + 3 e- → NII (reduction)
FeII - 1 e- → FeIII (oxidation)
FeI2 is a reducing agent, HNO3 is an oxidizing agent, FeI2 is a reducing agent.
Reactants:
- FeI2 – Iron(II) iodide
- 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.]
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