Question

What is the colour of Ferric oxide?

Answer 1

1. Ferric oxide (${\mathrm{Fe}}_2{\mathrm{O}}_3$) is basic in nature and is insoluble in water and a strong alkali such as $\mathrm{NaOH}$.
2. It is used for the manufacture of polish and magnetic tapes.
3. It is a red-brown oxide of iron which is available in nature as hematite and rust.
4. The chemical equation of rust formation:
   $\mathrm{Fe}\left(\mathrm{s}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\to {\mathrm{Fe}}_2{\mathrm{O}}_3\left(\mathrm{s}\right)$