The reddish–brown rust on iron roofing sheets consists of
-
A.
Fe3 + (H2O)6 -
B.
FeO.H2O -
C.
Fe2O3.XH2O -
D.
Fe3O4.2H22O
Correct Answer: Option C
Explanation
Iron [Fe] reacts with H2 in the presence of oxygen to form a rust.
4Fe + 3O2 → 2 Fe2O2
Fe2O3 + H2O → Fe2O3.H2O
There is an explanation video available below.