2 HNO3 + Fe(OH)2 → 2 H2O + Fe(NO3)2
This is an acid-base reaction (neutralization): HNO3 is an acid, Fe(OH)2 is a base.
- 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.]
- Fe(OH)2 – Iron(II) hydroxide