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If you avoid it completely, and you get the solvate , then is it not reasonable to go back to example 1 where it tells you that if you washed it in water, you got the anhydrate?
water can solvate both cations and anions
A compound may be able to form several sorts of solvate - different kinds of crystal containing solvent.
A solvate is a single crystalline phase of a given compound of specific chemical structure in which a solvent molecule or molecules have been incorporated into the crystal lattice.
On the other hand, differences of up to 10% have been found in the free energies of solvation of both individual ions and whole salts.