Anhydrous copper sulphate is colourless, but hydrated copper sulphate – InterviewSolution

1.	Anhydrous copper sulphate is colourless, but hydrated copper sulphate is blue. Explain ?
Answer» Solution :In ANHYDROUS copper sulphate, the splitting is very LESS. It absorbs energyin infrared REGION.It is colourless. In hydrated copper sulphate, water molecules are present in the COORDINATION sphere. The splitting of d-orbitals is reasonably increased. If it absorbs energy in visible region of light.Hence it is exhibit COLOUR.

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