5. Calcium chloride is quite soluble, whereas the solubility product of calcium fluoride, CaF2, is only 3.9 ´ 10-11. A waste stream of 1.00 ´ 10-3 M HCl is injected into a formation of limestone, CaCO3, where it comes into equilibrium. Give the chemical reaction that occurs and calculate the hardness and alkalinity of the water at equilibrium. Do the same for a waste stream of 1.00 ´ 10-3 M HF.