Question

Why the reaction of iron with oxygen and moisture produces the brown rust?​

Answer 1

Answer:

The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur. Boiling the water removes the oxygen and the layer of oil prevents it from re-entering.

Answer 2

Answer:

The iron reacts with air and water and form fe2o3