Problem 5: (10 points) a. Pure water is added to solid calcium fluoride (CaF2) to yield a saturated solution (i.e. a solid CaF2 phase remains after the addition of water). What will be the resulting Ca2+ concentration in solution? CaF2(s)Ca2++2FSolubilityofCaF2is31011. b. In a groundwater, the concentration of fluoride (F)was measured to be 10mg/L. What is the maximum solubility of calcium (Ca2+) in this water before CaF2 would start to precipitate