Waec Model Questions Vol1 2020 Chemistry Question 32

Practice objective / multiple choice question 32 from the 2020 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2020 Chemistry Objective / Multiple Choice Medium Difficulty
Question 32 WAEC_MODEL_QUESTIONS_VOL1 • 2020 • CHEMISTRY • objective

A buffer is prepared by dissolving 0.250 mol acetic acid (CH₃COOH, Ka = 1.8×10⁻⁵) and 0.150 mol sodium acetate (CH₃COONa) in 1.00 L of water. After the buffer is formed, 0.050 mol of HCl is added. What is the pH of the solution after the acid is added?

Answer Options

Correct Answer A. 4.27
B. 4.57
C. 3.97
D. 5.12
Correct Answer
A
Correct Option:
4.27

About This Question

This is Waec Model Questions Vol1 2020 Chemistry Question 32. It is one of the objective questions from the 2020 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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