Waec Model Questions Vol1 2025 Chemistry Question 33

Practice objective / multiple choice question 33 from the 2025 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2025 Chemistry Objective / Multiple Choice Hard Difficulty
Question 33 WAEC_MODEL_QUESTIONS_VOL1 • 2025 • CHEMISTRY • objective

A buffer is prepared by dissolving 0.20 mol acetic acid (CH₃COOH, Ka = 1.8×10⁻⁵) and 0.10 mol sodium acetate (CH₃COONa) in 1.0 L of water. Afterwards 0.05 mol of HCl is added. Calculate the pH of the resulting solution.

Answer Options

Correct Answer A. 4.05
B. 3.85
C. 5.10
D. 4.25
Correct Answer
A
Correct Option:
4.05

About This Question

This is Waec Model Questions Vol1 2025 Chemistry Question 33. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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