Neco Model Questions Vol1 2022 Chemistry Question 18

Practice objective / multiple choice question 18 from the 2022 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2022 Chemistry Objective / Multiple Choice Medium Difficulty
Question 18 NECO_MODEL_QUESTIONS_VOL1 • 2022 • CHEMISTRY • objective

The solubility product of silver chloride is \(K_{sp}=1.8\times10^{-10}\).\n(a) Calculate the molar solubility of \(\mathrm{AgCl}\) in pure water.\n(b) Determine its solubility when 0.010 M \(\mathrm{NaCl}\) is present (common‑ion effect).\n(c) If 0.010 M ammonia is added, forming the complex \(\mathrm{[Ag(NH_3)_2]^+}\) with overall formation constant \(\beta_2=1.6\times10^{7}\), calculate the new molar solubility of \(\mathrm{AgCl}\). Assume the ammonia concentration remains essentially 0.010 M.

Answer Options

A. 1.0×10⁻⁴ M; 2.5×10⁻⁸ M; 3.0×10⁻³ M
B. 9.5×10⁻⁶ M; 9.0×10⁻⁹ M; 2.5×10⁻³ M
C. 2.12×10⁻⁵ M; 3.6×10⁻⁸ M; 8.5×10⁻⁴ M
Correct Answer D. 1.34×10⁻⁵ M; 1.8×10⁻⁸ M; 1.70×10⁻³ M
Correct Answer
D
Correct Option:
1.34×10⁻⁵ M; 1.8×10⁻⁸ M; 1.70×10⁻³ M

About This Question

This is Neco Model Questions Vol1 2022 Chemistry Question 18. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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