Question

Why blue colour of copper sulphate crystals disappears on heating?

Answer 1

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.

Explanation:

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Answer 2

Answer:

Blue colour of copper sulphate crystals disappear on heating because:-

Explanation:

Copper sulphate crystals are actually copper sulphate pentahydrate crystals .When copper sulphate crystals are heated ,the molecules of water of crystallization are lost and the formation of anhydrous copper sulphate ,which is white in colour takes place .Actually the blue colour of copper sulphate crystals is due to the presence of five molecules of water of crystallization so when copper sulphate crystals are heated those 5 molecules of water of crystallization imparting the blue colour to the compound will get lost and anhydrous copper sulphate which is white in colour will be formed .

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