The following pictures represents solutions of CaF2, which may also contain ions other than Ca2+ and F- which are not shown. Gray spheres represent Ca2+ ions and unshaded spheres represent F- ions.

If solution (1) is a saturated solution of CaF2, which of solutions (1)-(4) represents the solution after a small amount of HNO3 and equilibrium is restored.

The following pictures represents solutions of CaF2 which may also contain ions other than Ca2 and F which are not shown Gray spheres represent Ca2 ions and uns class=