Neco Model Questions Vol1 2020 Chemistry Question 19
Practice objective / multiple choice question 19 from the 2020 Neco Model Questions Vol1 Chemistry examination.
A buffer solution is prepared by dissolving 0.250 mol of acetic acid (CH₃COOH, \(K_a = 1.8\times10^{-5}\)) and 0.150 mol of sodium acetate (CH₃COONa) in 1.00 L of water. (i) Calculate the pH of the solution. (ii) The solution is then diluted to a total volume of 2.00 L; calculate the new pH. (iii) How many millilitres of 0.100 M NaOH must be added to the original (1.00 L) buffer to raise its pH by exactly 0.50 units?
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About This Question
This is Neco Model Questions Vol1 2020 Chemistry Question 19. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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