1.

what is the chemical formulae of rust

Answer»

Iron when reacted with both water and oxygen which present in air (moist air), corrodes. Its silvery colour changes to a reddish-brown, because hydrated oxides are formed which is commonly called as rust. Reaction showing formation of rust when reacted with water in presence of oxygen (atmosphere).

4Fe+3O₂+XH₂O →2Fe₂O₃.XH₂O



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