Question

Does the temperature of a solution of copper 2 sulphate alone changes?

Answer 1

Yes

When copper(II) sulfate pentahydrate (CuSO₄•5H₂O) is heated, it decomposes to the dehydrated form. The waters of hydration are released from the solid crystal and form water vapor. The hydrated form is medium blue, and the dehydrated solid is light blue.