Question

if gypsum is heated above 373k (above 100°C) it will-

1-Convert into POP

2-convert into CaSO4. 2H2O

3-Convert into CaSO4.1/2H20

4-convert into dead plaster

Submit​

Answer 1

Explanation:

converts to dead plaster

it is confused with the  the formation of plaster of paris

but POP is formed at 373 K

Above 373K it turns to anhydrous calcium sulphate ie the dead burnt plaster

Answer 2

Answer:

Gypsum is a compound known as calcium sulfate bihydrate and when it is heated to 373K, it looses its water of crystallization and forms a compound named calcium sulfate hemihydrate. The compound formed is commonly known as Plaster of Paris.

The compound formed is used in the treatment of fractured bones in the hospital