Answer:
the ion-dipole forces between the ions and the water molecules
Step-by-step explanation:
Water is a polar molecule having a high dipole moment. This high polarity makes it a popular choice of polar solvent.
CuSO4 is an ionic compound composed of Cu^2+ and SO4^2-. When dissolved in water, the positive dipole in water interacts with the negative ion while the negative dipole in water interacts with the positive ion thereby causing the compound(CuSO4 ) to dissolve in water due to the ion-dipole forces between the ions and the water molecules.