What Is the Maximum Concentration of Carbonate Ions That Will $\times$

question 77

Multiple Choice

What is the maximum concentration of carbonate ions that will precipitate BaCO₃ but not MgCO₃ from a solution that is M each in Mg²⁺ and Ba²⁺? For MgCO₃,K_sp = 1.0 $\times$ 10^-15 and for BaCO₃,K_sp = 2.6 $\times$ 10^-9.

• A) M
• B) M
• C) M
• D) M
• E)None of these;MgCO₃ will always precipitate before BaCO₃.

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