Which of the following salts has no water of crystallization? (a) Blue vitriol (b) Washing soda (c) Baking soda (d) Gypsum
Option C. 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.
