a. For each anion in today's experiment: Cl-, I-, PO4-3, SO4-2, use the solubility rules to determine if a precipitate SHOULD form when using the reagents in the procedure. b. Why is emphasis placed on the use of distilled water in the procedure? c. The nitrate ion, NO3-, is in a separate group from the anions used in today's experiment. Suggest a reason why the procedure used today would make the determination of the nitrate ion difficult.