How does iron rust?

1 Answer
Oct 2, 2017

4Fe+3O2+6H2O4Fe(OH)3

Explanation:

Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.

Word equation:
iron + water + oxygen → hydrated iron(III) oxide

Chemical equation:
4Fe+3O2+6H2O4Fe(OH)3