Which of the following salts does not contain water of crystallization?
(a) Blue vitriol
(b) Baking soda
(c) Washing soda
(d) Gypsum
The chemical formula of the given chemical compounds are:
Baking soda: NaHCO3
Blue vitriol: CuSO4.5H2O
Washing soda: Na2CO3.10H2O and
Gypsum: CaSO4.2H2O.
So, baking soda does not contain water of crystallization.