Neco Model Questions Vol1 2024 Chemistry Question 35

Practice objective / multiple choice question 35 from the 2024 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Medium Difficulty

Question 35 NECO_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

Calcium fluoride, \(\mathrm{CaF_2}\), has a solubility product \(K_{\text{sp}} = 3.9 \times 10^{-11}\) at 25 °C. The salt is dissolved in a solution that already contains 0.10 M \(\mathrm{NaF}\). Calculate the equilibrium concentration of \(\mathrm{Ca^{2+}}\) ions in the solution.

Answer Options

A. 3.9 × 10^{-7} M

B. 1.0 × 10^{-9} M

Correct Answer C. 3.9 × 10^{-9} M

D. 3.9 × 10^{-10} M

Correct Answer

Correct Option:

3.9 × 10^{-9} M

About This Question

This is Neco Model Questions Vol1 2024 Chemistry Question 35. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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Neco Model Questions Vol1 2024 Chemistry Question 35

Calcium fluoride, \(\mathrm{CaF_2}\), has a solubility product \(K_{\text{sp}} = 3.9 \times 10^{-11}\) at 25 °C. The salt is dissolved in a solution that already contains 0.10 M \(\mathrm{NaF}\). Calculate the equilibrium concentration of \(\mathrm{Ca^{2+}}\) ions in the solution.

Answer Options

About This Question

Master the Exam!

Calcium fluoride, \(\mathrm{CaF_2}\), has a solubility product \(K_{\text{sp}} = 3.9 \times 10^{-11}\) at 25 °C. The salt is dissolved in a solution that already contains 0.10 M \(\mathrm{NaF}\). Calculate the equilibrium concentration of \(\mathrm{Ca^{2+}}\) ions in the solution.