Question

how to separate copper sulfate and salt from water
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Answer 1

we can add zinc sulphate in the solution to seperate

Answer 2

$\small\green {\sf{Bonjour\ Mate!}}$

Common salt has a low solubility gradient, so upon cooling a heated saturated solution of it only a little of it would precipitate as cubic crystals. However CuSO4 has a high solubility gradient, this means that a lot of crystals would be formed when a saturated solution of it is left to cool.

if you have a solution containing both salt and CuSO4, then it would be wise to do crystallization to obtain the products. Heat the solution till copper sulfate is saturated, then filter to remove the sodium chloride crystals. Then, slowly cool the solution. Only a little NaCl crystals will form, but a lot of CuSO4 crystals will form. Remove the blue crystals and redo the first step. Copper sulfate can be purified by recrystallizing a few times, so is the salt