Neco Model Questions Vol1 2018 Chemistry Question 8

Practice essay / theory question 8 from the 2018 Neco Model Questions Vol1 Chemistry examination. This question covers Solubility, Solubility product (Ksp), Common ion effect, Temperature dependence of solubility .

Neco Model Questions Vol1 2018 Chemistry Essay / Theory

Topics: Solubility Solubility product (Ksp) Common ion effect Temperature dependence of solubility

Question 8 NECO_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • essay

A saturated solution of calcium fluoride, CaF₂, at 25 °C contains 0.016 g of CaF₂ per 100 mL of solution. The solution is then heated to 45 °C where the solubility becomes 0.025 g per 100 mL.

Question Parts

( a )

Calculate the solubility product constant (Ksp) of CaF₂ at 25 °C.

( b )

Determine the Ksp at 45 °C and comment on how temperature affects the solubility of CaF₂.

( c )

If 0.010 mol of NaF is added to 1.00 L of the saturated solution at 25 °C, calculate the new concentration of Ca²⁺ ions remaining in solution.

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About This Question

This is Neco Model Questions Vol1 2018 Chemistry Question 8. It is one of the essay questions from the 2018 Neco Model Questions Vol1 Chemistry examination.

The question covers Solubility, Solubility product (Ksp), Common ion effect, Temperature dependence of solubility .

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