Question

What is rust chemically?​

Answer 1

Explanation:

Rust consists of hydrated iron(III) oxides Fe2O3·nH2O and iron(III) oxide-hydroxide (FeO(OH), Fe(OH)3). It is typically associated with the corrosion of refined iron. ... Rusting is the common term for corrosion of iron and its alloys, such as steel.

Answer 2

Answer:

Rust is an iron oxide, a usually reddish brown oxide formed by the reaction of iron and oxygen in the presence of water or air moisture. Several forms of rust are distinguishable both visually and by spectroscopy, and form under different circumstances.

Rust consists of hydrated iron(III) oxides Fe2O3·nH2O and 

iron(III) oxide-hydroxide (FeO(OH),

Fe(OH)3).

It is typically associated with the corrosion of refined iron.