Neco 2017 Chemistry Question 3
Practice objective / multiple choice question 3 from the 2017 Neco Chemistry examination.
A buffer solution is prepared by mixing 0.250 mol of acetic acid (\(\text{CH}_3\text{COOH}\), \(K_a = 1.8 \times 10^{-5}\)) with its sodium salt. The initial pH of the buffer is 4.75. After adding 0.050 mol of HCl, the pH becomes 4.30. Calculate the initial amount (in moles) of sodium acetate (\(\text{NaCH}_3\text{COO}\)) present in the buffer.
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About This Question
This is Neco 2017 Chemistry Question 3. It is one of the objective questions from the 2017 Neco Chemistry examination.
Difficulty level: Medium .
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