Neco Model Questions Vol1 2024 Chemistry Question 1
Practice objective / multiple choice question 1 from the 2024 Neco Model Questions Vol1 Chemistry examination.
A buffer is prepared by mixing equal volumes of 0.250 M acetic acid (CH₃COOH, \(K_a = 1.8 \times 10^{-5}\)) and 0.250 M sodium acetate (CH₃COONa). The total volume of the buffer is 500 mL. How many milliliters of 0.100 M HCl must be added to lower the pH of the buffer by 0.30 units? Assume the volume change on addition is negligible.
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This is Neco Model Questions Vol1 2024 Chemistry Question 1. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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