A Solution Containing CaCl₂ Is Mixed with a Solution of Li₂C₂O₄

question 135

Multiple Choice

A solution containing CaCl₂ is mixed with a solution of Li₂C₂O₄ to form a solution that is 2.1 × 10^-5 M in calcium ion and 4.75 × 10^-5 M in oxalate ion.What will happen once these solutions are mixed? K_sp (CaC₂O₄) = 2.3 × 10^-9.

• A) A precipitate will form since Q > K_sp for calcium oxalate.
• B) Nothing will happen since both calcium chloride and lithium oxalate are soluble compounds.
• C) Nothing will happen since calcium oxalate is extremely soluble.
• D) Nothing will happen since K_sp > Q for all possible precipitants.
• E) There is not enough information to determine.

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