* Copper(II) sulfate pentahydrate (CuSO₄•5H₂O): This is the most common form of copper sulfate. It has five water molecules attached to each copper sulfate molecule. The water molecules are coordinated to the copper ion, forming a complex.
* Anhydrous copper sulfate (CuSO₄): This form has no water molecules attached. It's a white powder, while the pentahydrate is blue.
* Other hydrates: There are also less common hydrates like CuSO₄•H₂O (monohydrate) and CuSO₄•3H₂O (trihydrate).
Therefore, to answer your question accurately, you need to specify which form of copper sulfate you are asking about.
