Question

Could `"copper sulfate pentahydrate"` be dried by heating?

Answer 1

`CuSO_4*5H_2O + Delta rarr CuSO_4(s) + 5H_2Ouarr`

Explanation:

`CuSO_4*5H_2O`, blue vitriol, would be exceptionally hard to dry this way; a residue of water would remain, as indicated by faint blue colour in the salt.