Waec Model Questions Vol1 2017 Chemistry Question 28

Practice objective / multiple choice question 28 from the 2017 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2017 Chemistry Objective / Multiple Choice Medium Difficulty

Question 28 WAEC_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • objective

Silver chloride (AgCl) has a solubility product K_sp = 1.8×10⁻¹⁰ at 25 °C. Calculate the molar solubility of AgCl in a solution that already contains 0.10 M NaCl. Then, if 0.10 M NH₃ is added to the same solution (forming the complex Ag⁺ + 2NH₃ ⇌ [Ag(NH₃)₂]⁺ with formation constant K_f = 1.6×10⁷), estimate the new solubility of AgCl, assuming the volume remains 1 L.

Answer Options

A. 1.8 × 10⁻⁴ mol L⁻¹

B. 2.9 × 10⁻⁵ mol L⁻¹

C. 5.0 × 10⁻⁴ mol L⁻¹

Correct Answer D. 2.9 × 10⁻⁴ mol L⁻¹

Correct Answer

Correct Option:

2.9 × 10⁻⁴ mol L⁻¹

About This Question

This is Waec Model Questions Vol1 2017 Chemistry Question 28. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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