A Solution Containing CaCl₂ Is Mixed with a Solution of Li₂C₂O₄

question 7

Multiple Choice

A solution containing CaCl₂ is mixed with a solution of Li₂C₂O₄ to form a solution that is 3.5 × 10^-4 mol L^-1 in calcium ion and 2.33 × 10^-4 mol L^-1 in oxalate ion. What will happen once these solutions are mixed? K_sp (CaC₂O₄) = 2.3 × 10^-9.

• A) Nothing will happen since both calcium chloride and lithium oxalate are soluble compounds.
• B) Nothing will happen because K_sp > Q for all possible precipitates.
• C) A precipitate will form as calcium oxalate is not soluble to any extent.
• D) A precipitate will form since Q > K_sp for calcium oxalate.
• E) Nothing will happen because Q = K_sp.

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