Question

8. The chemical formula for plaster of Paris is :
2 (a) CaSO4.2 H2O
(b) CaSO4. H2O
. (©) Caso, 3420
(d) 2 CaSO4. H2O​

Answer 1

Answer:

caso4.2H20

heating gypsum at 373k

caso4.2H2O=caso4.1/2 H20+1 1/2 H2O

Answer 2

CaSO4.2 H2O this is your answer