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TESTING THE WATER OF HYDRATION OF SALT
To check whether the given sample of salt possesses 'Water of Hydration' or not. To verify the presence of water molecules in the given hydrated salt .
Water of crystallization or water of hydration is the phenomenon shown by certain salts in which water molecules are present inside the crystals are responsible for their colour and geometry. e.g. Crystalline copper sulphate CuSO4.5H2O
A pinch of crystalline copper sulphate in a test tube, tongs, spirit lamp.
A pinch of crystalline copper sulphate taken in a test tube and heated for sometime. Water droplets are seen on the inner walls of the test tube. This shows that the given salt contains water of crystallization. If the above observation is not noticed for the given salt, the water of hydration is absent.
In the given sample of salt, Water of crystallization / hydration is
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