Why do some salt not have water of crystallization? Give examples of such salts.
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Crystals of salts appear dry. But many salts contain some water molecule. This water molecules contain by crystals of slats is known as water of crystallization. Salts that contain water molecules are known as hydrated salts.
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Water of crystallization is the amount of water molecules which are present in one formula unit of salt. We can also say that the water molecules which form part of a structure of a crystal are called water of crystallization. They give the crystals their shape and crystal.
Example :
CuSO4.5H2O (Copper sulphate)- it is used as an antiseptic and as an antifungal agent for topical use.
CaSO4.2H2O (Calcium sulphate)- it is used in the manufacture of Plaster of Paris and also used in tofu as a coagulant......
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