Question

What is the formula of rusting of iron explain

Answer 1

Formula is FeSO4.xH2O
Where x in H20 refers to the number of molecules of water of crystallisation in rust.
I hope this helps you out

Answer 2

the formula of hydrated iron rust is Fe2O3.xH2O.The rust forms as we all know that air contains oxygen so when this oxygen reacts to iron then it form a brown coating which is known as Rust.