Question

Write the preparation method of calcium sulphate. (in short)​

Answer 1

Answer:

It is obtained when gypsum, CaSO4·2H2O, is heated to 393 K. Above 393 K, no water of crystallisation is left and anhydrous calcium sulphate, CaSO4 is formed. This is known as 'dead burnt plaster'. It has a remarkable property of setting with water

Answer 2

NOTE :- REFER TO THE ATTACHMENT

AND CALCIUM SULPHATE IS ALSO KNOWN AS PLASTER OF PARIS