Neco 2022 Chemistry Question 28
Practice objective / multiple choice question 28 from the 2022 Neco Chemistry examination.
A buffer is prepared by mixing 0.250\,\text{mol of acetic acid (}\mathrm{CH_3COOH}\text{)} and 0.150\,\text{mol of sodium acetate (}\mathrm{CH_3COONa}\text{)} in 1.00\,\text{L of water}. The acid dissociation constant is \(K_a=1.8\times10^{-5}\). After adding 0.050\,\text{mol of HCl}, what is the pH of the solution? Give your answer to two decimal places.
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About This Question
This is Neco 2022 Chemistry Question 28. It is one of the objective questions from the 2022 Neco Chemistry examination.
Difficulty level: Medium .
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