Question

Give the chemical formula of :

1. Bauxite
2. Cryolite
3. Sodium aluminate

Answer 1

The chemical formula of :

1. Bauxite : ${\mathbf{Al}}_{\mathbf{2}}{\mathbf{O}}_{\mathbf{3}}\mathbf{·}\mathbf{2}{\mathbf{H}}_{\mathbf{2}}\mathbf{O}$ (Hydrated aluminium oxide)
2. Cryolite : ${\mathbf{Na}}_{\mathbf{3}}{\mathbf{AlF}}_{\mathbf{6}}$ (Sodium aluminium fluoride)
3. Sodium aluminate : ${\mathbf{NaAlO}}_{\mathbf{2}}$ (Sodium aluminate)