A 525-mL buffer solution is 0.367 M in acetic acid (CH3COOH) and 0.367 M in sodium acetate (CH3COONa). Ka(CH3COOH)=1.8×10−5 Part A: What is the initial pH of this solution? Express your answer using two decimal places. pH = Part B: What is the pH after addition of 140 mL of 0.100 M HCl to the initial buffer solution in part A? Express your answer using two decimal places. pH = Part C: What is the pH after addition of 140 mL of 0.100 M NaOH to the initial buffer solution in part A? Express your answer using two decimal places.
A 525-mL buffer solution is 0.367 M in acetic acid (CH3COOH) and 0.367 M in sodium acetate (CH3COONa). Ka(CH3COOH)=1.8×10−5 Part A: What is the initial pH of this solution? Express your answer using two decimal places. pH = Part B: What is the pH after addition of 140 mL of 0.100 M HCl to the initial buffer solution in part A? Express your answer using two decimal places. pH = Part C: What is the pH after addition of 140 mL of 0.100 M NaOH to the initial buffer solution in part A? Express your answer using two decimal places.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 85QRT: A buffer solution was prepared by adding 4.95 g sodium acetate to 250. mL of 0.150-M acetic...
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A 525-mL buffer solution is 0.367 M in acetic acid (CH3COOH) and 0.367 M in sodium acetate (CH3COONa).
Ka(CH3COOH)=1.8×10−5
Part A:
What is the initial pH of this solution? Express your answer using two decimal places.
pH =
Part B:
What is the pH after addition of 140 mL of 0.100 M HCl to the initial buffer solution in part A?
Express your answer using two decimal places.
pH =
Part C:
What is the pH after addition of 140 mL of 0.100 M NaOH to the initial buffer solution in part A?
Express your answer using two decimal places.
pH =
If possible, make sure its in two decimal places.
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