A chemistry student needs 60.0 g of tetrahydrofuran for an experiment. By consulting the CRC Handbook of Chemistry and Physics,
1 answer:
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This is an incomplete question, here is a complete question.
A solution containing CaCl₂ is mixed with a solution of Li₂C₂O₄ to form a solution that is 3.5 × 10⁻⁴ M in calcium ion and 2.33 × 10⁻⁴ M in oxalate ion. What will happen once these solutions are mixed? Ksp (CaC₂O₄) = 2.3 × 10⁻⁹
A. Nothing will happen since both calcium chloride and lithium oxalate are soluble compounds.
B. Nothing will happen Ksp > 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 > Ksp for calcium oxalate.
Answer : The correct option is, (D) A precipitate will form since Q > Ksp for calcium oxalate.
Explanation :
Concentration of =
Concentration of =
The equilibrium chemical reaction will be:
The solubility constant expression for this reaction is:
Now we have to calculate the ionic product for calcium oxalate.
From this we conclude that, that means a white solid precipitate of calcium oxalate will be formed when the solutions are mixed.
Hence, the correct option is, (D)