Chemistry - Complete s-block Question with Solution | TestHub

Plaster of Paris (POP) is a hemihydrate of calcium sulphate. Its chemical formula is ${\mathrm{CaSO}}_4\cdot \frac{1}{2}{\mathrm{H}}_2\mathrm{O}\left[\mathrm{or}{\left({\mathrm{CaSO}}_4\right)}_2\cdot {\mathrm{H}}_2\mathrm{O}\right]$.