Which of the following best helps to explain why the value of ÎH° for the dissolving of CaF2 in water is positive? Ca+2 ions have very strong ion-ion interactions with F- ions in the crystal lattice.
Ca2+ ions have very strong ion-dipole interactions with water molecules in the solution.
CaF2(s) dissolves in water to form CaF2(aq) particles.
CaF2(s) is insoluble in water.
