Given the choice of adding ions of Mg 2+ (aq), Ca 2+ (aq), S…

Given the choice of adding ions of Mg 2+ (aq), Ca 2+ (aq), Sr 2+ (aq) or Ba 2+ (aq) to a solution of carbonate ions, CO3 2-, which choice would precipitate an insoluble carbonate compound first? Use the following Ksp data:    MgCO3  Ksp = 6.82 × 10-6 CaCO3  Ksp = 4.96 × 10-9 SrCO3 Ksp = 9.30× 10-10 BaCO3 Ksp = 5.00 × 10-9