Given the Choice of Adding Ions of Mg ²⁺ (Aq),Ca

question 42

Multiple Choice

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
Data:
MgCO₃
= 6.82
CaCO₃
= 4.96
SrCO₃
= 9.30
BaCO₃
= 5.00

• A)Mg ²⁺
• B)Ca ²⁺
• C)Sr ²⁺
• D)Ba ²⁺
• E)none of these will give a precipitate

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