'A' is a blue coloured crystalline salt. On heating it loses blue colour and to give 'B'. When water is added, 'B' gives back to 'A'. Identify A and B, write the equation.

'A' is a blue coloured crystalline salt. On heating it loses blue colo

1.	'A' is a blue coloured crystalline salt. On heating it loses blue colour and to give 'B'. When water is added, 'B' gives back to 'A'. Identify A and B, write the equation.
Answer» Solution : (i) Blue COLORED crystalline salt is copper sulphate pentahydrate (A) (II) On heating Copper sulphate pentahydrate it loses blue colour and to GIVE anhydrous copper sulphate (B). (iii) When water is added to the anhydrous copper sulphate (B) gives back to copper sulphate pentahydrate (A). (iv) `underset(" coppersulphatepentahydrate(bluecolour )")(CuSO_4. 5H_2 O )underset("COOLING ") overset("Hearting ") hArrunderset("Anhydrouscoppersulphate( coloruless )") (CuSO_4 + 5H_2 O`