Here's why:

* Solubility is based on "like dissolves like" principle: Copper sulfate is an ionic compound, meaning it's made up of charged ions (Cu²⁺ and SO₄²⁻). Alcohol, on the other hand, is a polar solvent but not as polar as water.

* Ionic compounds prefer polar solvents: Ionic compounds like copper sulfate readily dissolve in polar solvents like water, where the water molecules can surround and separate the ions.

* Alcohol's limited polarity: While alcohol is polar, it doesn't have the same strength of polarity as water. This makes it a poor solvent for ionic compounds like copper sulfate.

Therefore, copper sulfate will likely not dissolve in alcohol to any significant extent.