Waec Model Questions Vol1 2025 Chemistry Question 23

Practice objective / multiple choice question 23 from the 2025 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2025 Chemistry Objective / Multiple Choice Medium Difficulty
Question 23 WAEC_MODEL_QUESTIONS_VOL1 • 2025 • CHEMISTRY • objective

A buffer solution is prepared by mixing 0.250 mol of acetic acid (CH₃COOH, Ka = 1.8×10⁻⁵) with 0.150 mol of sodium acetate (CH₃COONa) in 1.00 L of water. Calculate the pH of the buffer.

Answer Options

Correct Answer A. 4.52
B. 4.12
C. 5.02
D. 3.98
Correct Answer
A
Correct Option:
4.52

About This Question

This is Waec Model Questions Vol1 2025 Chemistry Question 23. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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