Waec Model Questions Vol1 2018 Chemistry Question 30

Practice objective / multiple choice question 30 from the 2018 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2018 Chemistry Objective / Multiple Choice Medium Difficulty

Question 30 WAEC_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • objective

A buffer solution is prepared by dissolving 0.200 mol of acetic acid (CH₃COOH, Ka = 1.8×10⁻⁵) and 0.150 mol of sodium acetate (CH₃COONa) in 500 mL of water. Then 0.050 mol of HCl is added to the solution. Calculate the pH of the resulting solution.

Answer Options

Correct Answer A. 4.34

B. 4.09

C. 4.71

D. 3.87

Correct Answer

Correct Option:

4.34

About This Question

This is Waec Model Questions Vol1 2018 Chemistry Question 30. It is one of the objective questions from the 2018 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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Waec Model Questions Vol1 2018 Chemistry Question 30

A buffer solution is prepared by dissolving 0.200 mol of acetic acid (CH₃COOH, Ka = 1.8×10⁻⁵) and 0.150 mol of sodium acetate (CH₃COONa) in 500 mL of water. Then 0.050 mol of HCl is added to the solution. Calculate the pH of the resulting solution.

Answer Options

About This Question

Master the Exam!

A buffer solution is prepared by dissolving 0.200 mol of acetic acid (CH₃COOH, Ka = 1.8×10⁻⁵) and 0.150 mol of sodium acetate (CH₃COONa) in 500 mL of water. Then 0.050 mol of HCl is added to the solution. Calculate the pH of the resulting solution.