What is the formula for calcium sulfate dihydrate?

1 Answer
anor277
Dec 30, 2015

#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.

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