Differentiate between hydrated and anhydrous crystals.

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Solution

Hydrated crystals Anhydrous crystals
The salt crystals that contain the water of crystallization when are called hydrated crystals. The salt crystals that lose their water of crystallization on heating are called anhydrous crystals.
For example: ${CuSO}_{4} . 5 H_{2} O$ crystals are blue in color and contain 5 moles of water of crystallization. For example: Silica gel, Table salt $(NaCl)$ are examples of anhydrous crystals.

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Hydrated crystals	Anhydrous crystals
The salt crystals that contain the water of crystallization when are called hydrated crystals.	The salt crystals that lose their water of crystallization on heating are called anhydrous crystals.
For example: ${CuSO}_{4} . 5 H_{2} O$ crystals are blue in color and contain 5 moles of water of crystallization.	For example: Silica gel, Table salt $(NaCl)$ are examples of anhydrous crystals.