why the colour of copper sulphate crystals on heating
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Answer: when copper sulphate is heated for some time, the blue colour disappears and it becomes white-gray in colour. This is because the water molecules are lost on heating and copper sulphate pentahydrate is converted to anhydrous copper sulphate...
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Copper sulphate crystals are a brilliant blue in colour. When heated strongly, the water molecules in the crystal are lost. It changes into white colored anhydrous copper sulphate. When water is added to it, then it again changes back to blue colour.
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