What is the formula for calcium sulfate dihydrate?

1 Answer
Dec 30, 2015

Answer:

#CaSO_4*2H_2O#

Explanation:

Calcium sulfate dihydrate is an ionic substance composed of #Ca^(2+)# and #SO_4^(2-)#. The associated water molecules are known as waters of crystallization, which are tacked on to the substance when it crystallizes (from water). They could be removed on prolonged drying.