Question

What is the formula of rust???

Answer 1

Rust is formed when iron is in contact with oxygen and moisture.Therefore its formula is:
Fe₂O₃ . xH₂O [Formula of Rust].
x is not determined and it is the number of molecules of water.

Answer 2

The chemical formula of rust is Fe2O3. xH2O

• The rusting is a chemical process which happens on the surface of the iron metal when the iron gets into contact with any kind of water.
• The formed rust is a dusty brown coating material which corrodes the surface of the iron metal.
• The general chemical formula of rust is Fe2O3. xH2O. (Here, x means the variable number of water molecules.)