* Salts are ionic compounds formed by the reaction of an acid and a base.
* Iron nitrate is formed by the reaction of nitric acid (HNO₃, an acid) and iron hydroxide (Fe(OH)₃, a base).
The chemical formula for iron nitrate is Fe(NO₃)₃. It consists of iron ions (Fe³⁺) and nitrate ions (NO₃⁻).