A Solution Containing CaCl₂ Is Mixed with a Solution of Li₂C₂O₄

question 156

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 precipitants.
• 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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Definitions:

Fixation

Arrested development at a psychosexual stage occurring because of excessive gratification or frustration at that stage.

Divergence

The act of moving away in different direction from a common point; in creativity and thinking, it refers to the generation of multiple solutions to a given problem.

Convergence

The process by which eyes adjust their angle so that the visual axes meet at the point of focus, or in a broader sense, the tendency for ideas and phenomena to evolve towards a common point.

Pupil

The opening in the center of the iris of the eye that regulates the amount of light that enters the eye to reach the retina.