Question

Write the balanced equation for the hydration of CuSO4. Indicate the physical states using the abbreviations (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) to indicate the aqueous phase. Indicate appropriate charges on negative and positive ions if they are formed.

Answer 1

I don't know if you want just the hydration or something else. The following is not just a hydration step.
CuSO4(s) + 4H2O(l) ==> Cu(H2O)4^++(aq) + SO4^=(aq)

The simpler straight hydration step is (and I write H2O as a gas meaning vapor).
CuSO4(s) + 5H2O(g) ==> CuSO4.5H2O(s)