7: When we put copper sulphate in water after sometime we find the solution turns blue. why? also, on heating it what changes will occur?

7: When we put copper sulphate in water after sometime we find the sol

1.	7: When we put copper sulphate in water after sometime we find the solution turns blue. why? also, on heating it what changes will occur?
Answer» When copper SULPHATE powder is KEPT in WATER for sometime, it absorbs the water as water of crystallisation and the solution turns blue. When we heat the blue-coloured copper sulphate crystals, it will once again turn to white as all water is lost to environment due to EVAPORATION.