Waec Model Questions Vol1 2023 Chemistry Question 25

Practice objective / multiple choice question 25 from the 2023 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2023 Chemistry Objective / Multiple Choice Hard Difficulty
Question 25 WAEC_MODEL_QUESTIONS_VOL1 • 2023 • CHEMISTRY • objective

Benzoic acid (C₆H₅COOH) has Ka = 6.3×10⁻⁵. A 0.250 M solution of benzoic acid is prepared in 200 mL of water. Then 0.020 mol of NaOH is added. Assuming complete neutralisation of the added base, calculate the pH of the resulting buffer solution.

Answer Options

Correct Answer A. 4.02
B. 4.56
C. 4.27
D. 3.78
Correct Answer
A
Correct Option:
4.02

About This Question

This is Waec Model Questions Vol1 2023 Chemistry Question 25. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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