Gce Model Questions Vol1 2024 Chemistry Question 45

Practice objective / multiple choice question 45 from the 2024 Gce Model Questions Vol1 Chemistry examination.

Gce Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Medium Difficulty
Question 45 GCE_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

Calcium fluoride (\(\mathrm{CaF_2}\)) has a solubility product \(K_{sp}=3.9\times10^{-11}\). (a) Calculate its molar solubility in pure water. (b) Calculate its molar solubility when the solution already contains \(0.10\ \text{M}\) sodium fluoride (\(\mathrm{NaF}\)).

Answer Options

A. (a) 1.0×10⁻⁴ M; (b) 1.2×10⁻⁸ M
B. (a) 3.0×10⁻⁴ M; (b) 2.5×10⁻⁸ M
C. (a) 4.5×10⁻⁴ M; (b) 7.8×10⁻⁹ M
Correct Answer D. (a) 2.1×10⁻⁴ M; (b) 3.9×10⁻⁹ M
Correct Answer
D
Correct Option:
(a) 2.1×10⁻⁴ M; (b) 3.9×10⁻⁹ M

About This Question

This is Gce Model Questions Vol1 2024 Chemistry Question 45. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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