Question

Correct the given incorrect statement “ On heating white powder of copper sulphate changes into blue crystal”.

Answer 1

This given statement is wrong because on strong heating the blue crystals of copper sulphate change into a white powder.

The explanation for the correct statement :

• This Hydrated $\mathrm{Copper}\mathrm{sulphate}\left({\mathrm{CuSO}}_4.7{\mathrm{H}}_2\mathrm{O}\right)$ has blue color due to water of crystallization $7{\mathrm{H}}_2\mathrm{O}$ present in it.
• When this is heated it turns Anhydrous $\mathrm{Copper}\mathrm{sulphate}$and loses its water of crystallization and becomes white.

Conclusion:

This given statement is incorrect and the correct statement is “ on strong heating the blue crystals of copper sulphate change into white powder “.