Question

A compound which is prepared from gypsum has the property of hardening when mixed with water.identify the compund.write the chemical equation of its preparation mention one important use of the compund

Answer 1

The compound is PLASTER OF PARIS. chemical name of POP is caso4.1/2h2o.
it is prepared by heating gypsum at 373K.
the equation is as follows -
caso4.2h2o ----- caso4.1/2h2o + 1 1/2 h2o