Igcse Model Questions Vol1 2020 Chemistry Question 4
Practice objective / multiple choice question 4 from the 2020 Igcse Model Questions Vol1 Chemistry examination.
A buffer solution is prepared by mixing 0.250 mol of acetic acid (CH₃COOH, \(K_a = 1.8\times10^{-5}\)) with 0.150 mol of sodium acetate (CH₃COONa) in 1.00 L of water.\n(a) Calculate the initial pH of the buffer.\n(b) Then 0.050 mol of HCl is added to the buffer (volume change is negligible). Calculate the new pH.\n(c) How many moles of NaOH would be required to restore the pH to its original value?
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About This Question
This is Igcse Model Questions Vol1 2020 Chemistry Question 4. It is one of the objective questions from the 2020 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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