Neco 2023 Chemistry Question 44
Practice objective / multiple choice question 44 from the 2023 Neco Chemistry examination.
A buffer solution of total concentration 0.20\,mol\,L⁻¹ is to be prepared by mixing acetic acid (CH\(_3\)COOH, \(K_a = 1.8 \times 10^{-5}\)) and sodium acetate trihydrate (CH\(_3\)COONa·3H\(_2\)O, \(M = 136.08\)\,g\,mol⁻¹). The desired pH of the buffer is 4.75. Calculate the masses of acetic acid ( \(M = 60.05\)\,g\,mol⁻¹) and sodium acetate trihydrate required to prepare 250.0\,mL of this buffer. Give your answers to three significant figures.
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About This Question
This is Neco 2023 Chemistry Question 44. It is one of the objective questions from the 2023 Neco Chemistry examination.
Difficulty level: Medium .
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