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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Answer 1

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The blue coloured copper sulphate crystals turns white due to the loss of water molecules. The formula of copper sulphate is CuSO4. ... When copper sulphate is heated, it looses water molecules and hence it looses blue colour. On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate(FeSO4) is formed

Answer 2

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Copper(II) sulphate crystals in pentahydrate form is blue in color which on heating in 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.

Explanation:

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