Gce Model Questions Vol1 2025 Chemistry Question 27

Practice objective / multiple choice question 27 from the 2025 Gce Model Questions Vol1 Chemistry examination.

Gce Model Questions Vol1 2025 Chemistry Objective / Multiple Choice Medium Difficulty
Question 27 GCE_MODEL_QUESTIONS_VOL1 • 2025 • CHEMISTRY • objective

A buffer solution is to be prepared using acetic acid (CH_{3}COOH, pK_{a}=4.76) and its sodium salt (CH_{3}COONa). The total mass of acid and salt to be dissolved is 10.0 g, and the desired pH of the buffer is 5.26. Calculate the masses of acetic acid and sodium acetate required.

Answer Options

A. 2.5 g of acetic acid and 7.5 g of sodium acetate
Correct Answer B. 1.9 g of acetic acid and 8.1 g of sodium acetate
C. 2.0 g of acetic acid and 8.0 g of sodium acetate
D. 1.5 g of acetic acid and 8.5 g of sodium acetate
Correct Answer
B
Correct Option:
1.9 g of acetic acid and 8.1 g of sodium acetate

About This Question

This is Gce Model Questions Vol1 2025 Chemistry Question 27. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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