Waec Model Questions Vol1 2017 Chemistry Question 2

Practice objective / multiple choice question 2 from the 2017 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2017 Chemistry Objective / Multiple Choice Medium Difficulty
Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • objective

A buffer solution is prepared by dissolving 0.250 mol of acetic acid (CH₃COOH, Ka = 1.8×10⁻⁵) and 0.150 mol of sodium acetate (CH₃COONa) in 2.00 L of water. After the buffer is formed, 0.050 mol of HCl is added. What is the pH of the solution after the addition of HCl? Give your answer to two decimal places.

Answer Options

A. 4.55
B. 4.12
Correct Answer C. 4.27
D. 3.98
Correct Answer
C
Correct Option:
4.27

About This Question

This is Waec Model Questions Vol1 2017 Chemistry Question 2. It is a objective / multiple choice question from the 2017 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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