Question

In what manner the property of absorbing water to convert into gypsum of Plaster of Paris is useful?

Answer 1

Plaster of Paris$\left({\mathrm{CaSO}}_4·\frac{1}{2}{\mathrm{H}}_2\mathrm{O}\right)$ has the property of absorbing water to convert into gypsum $\left({\mathrm{CaSO}}_4·2{\mathrm{H}}_2\mathrm{O}\right)$ which is very hard and has the following uses:-

1. For making molds for toys, ceramics, and sculptures.
2. In bandages to support fractured bones.
3. In labs, to make apparatus air-tight by sealing the gaps.

Therefore, this property of POP is very useful.