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Applications of Crystallisaion

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Question

What would you observe when crystals of copper (II) sulphate and iron (II) sulphate are separately heated in two test tubes?

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Solution

Copper(II) sulphate crystals in pentahydrate form is blue in color which on heating in the test tube loses water molecules forming gray-white powder.
On heating, iron(II) sulphate loses its water of crystallization and the original green crystals are converted to brown colored anhydrous solid.

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What would you observe when crystals of copper (II) sulphate and iron (II) sulphate are separately heated in two test tubes ?

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