Question

The number of water molecules present in Glauber's salt is _________.

Answer 1

Water of crystallization:

(1)The fixed number of water molecules which combine with a crystal are necessary for the maintenance of crystalline properties,but capable of being lost either at normal temperature or at a higher temperature is called water of crystallization.

(2)Glauber's salt(${\mathrm{Na}}_2{\mathrm{SO}}_4.10{\mathrm{H}}_2\mathrm{O}$) has 10 water molecules.

Therefore,the number of water molecules present in Glauber's salt is 10.