Waec Model Questions Vol1 2021 Chemistry Question 6

Practice objective / multiple choice question 6 from the 2021 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2021 Chemistry Objective / Multiple Choice Medium Difficulty
Question 6 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • CHEMISTRY • objective

A 2.00 L aqueous solution contains 0.30 mol of sodium acetate (CH₃COONa) and 0.10 mol of acetic acid (CH₃COOH). The acid dissociation constant of acetic acid is Ka = 1.8×10⁻⁵. If 0.040 mol of HCl is added to the solution (volume change is negligible), calculate the pH of the resulting solution.

Answer Options

A. 4.85
B. 5.50
Correct Answer C. 5.01
D. 5.23
Correct Answer
C
Correct Option:
5.01

About This Question

This is Waec Model Questions Vol1 2021 Chemistry Question 6. It is a objective / multiple choice question from the 2021 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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