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Lakhmir Singh & Manjit Kaur - Chemistry

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Q. 703.5( 2 Votes )

The metal salt A

Class 10th Lakhmir Singh & Manjit Kaur - Chemistry 2. Acids, Bases and Salts

Answer :

A is copper sulphatepentahydrate, CuSO₄.5H₂O; B is water, H₂O; C is anhydrous copper sulphate, CuSO₄; D is water, H₂O.

Blue colour of copper sulphate is due to presence of 5 molecules of water. When copper sulphate is heated, it loses water molecules and turns into grey-white colour, which is known as anhydrous copper sulphate. After adding water; anhydrous copper sulphate becomes blue again.

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