Waec Model Questions Vol1 2025 Chemistry Question 10
Practice objective / multiple choice question 10 from the 2025 Waec Model Questions Vol1 Chemistry examination.
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 water. (a) Calculate the initial pH of the buffer. (b) If 0.100 M HCl is added and the pH drops by exactly 0.10 unit, what volume of the acid solution was added (in mL)?
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This is Waec Model Questions Vol1 2025 Chemistry Question 10. It is a objective / multiple choice question from the 2025 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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