Question

A compound x on heating loses partial crystallisation of water gives y which is used for making toys and other pottery articles. But when x is strongly heated (>130°c) it gives z which is used as drying agent .identify x,y,z and write the chemical quation

Answer 1

Answer:

x->gypsum

y->plaster of Paris

z->calcium sulphate

Explanation:

∆

CaSO4.2H2O------->CaSO4.0.5H2O+1.5H2O

to obtain z, y must be heated

∆

CaSO4.1/2H2O------->CaSO4+1/2H2O