Neco 2018 Chemistry Question 32
Practice objective / multiple choice question 32 from the 2018 Neco Chemistry examination.
A buffer is prepared by dissolving 0.200 mol of acetic acid (CH_{3}COOH, Ka = 1.8\times10^{-5}) and 0.150 mol of sodium acetate (CH_{3}COONa) in 1.00 L of water. (a) Calculate the initial pH of the solution. (b) After adding 0.050 mol of HCl, what is the new pH? (c) How many grams of NaOH must be added to restore the pH to its original value? (Molar mass of NaOH = 40.0 g mol^{-1}).
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About This Question
This is Neco 2018 Chemistry Question 32. It is one of the objective questions from the 2018 Neco Chemistry examination.
Difficulty level: Medium .
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