3 Fe3P2 + 28 HNO3 → 6 FePO4 + 3 Fe(NO3)3 + 19 NO + 14 H2O
This is an oxidation-reduction (redox) reaction:
6 P-III - 48 e- → 6 PV (oxidation)
19 NV + 57 e- → 19 NII (reduction)
9 FeII - 9 e- → 9 FeIII (oxidation)
Fe3P2 is a reducing agent, HNO3 is an oxidizing agent, Fe3P2 is a reducing agent.
Reactants:
- Fe3P2
- 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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