Question

A compound X which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water.

(a) Identify the compound X.

(b) Write the chemical equation for its preparation.

(c) For what purpose is it used in hospitals?

Answer 1

(a) Compound X is Plaster of Paris.

(b) The chemical equation for its preparation is:

$\underset{Gypsum}{CaS{O}_4.2H_{2}O}\underset{373K}{\overset{Heatat{100}^{0}C}{\to }}\underset{PlasterofParis}{CaS{O}_4.\frac{1}{2}{H}_{2}O}+\underset{Water}{1\frac{1}{2}{H}_{2}O}$

(c) Plaster of Paris (POP) is used in hospitals for setting fractured bones in the right position to ensure correct healing.