Question

A compound which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water. Identify the compound. Write the chemical equation for its preparation. For what purpose is it used in hospitals?

Answer 1

The compound prepared from gypsum on heating it at 100^oC, is known as plaster of Paris. Its chemical formula is CaSO₄. 1/2H₂ Hence, its chemical name is calcium sulphate hemihydrate.  The chemical equation for its preparation is as follows:

Plaster of Paris is used in hospitals mainly as plaster for supporting fractured bones in the right position. In dentistry, it is used for making casts