You have 500.0 mL of a buffer solution containing 0.250 M acetic acid (CH₃COOH) and 0.240 M sodium acetate (CH₃COONa). What will the pH of this solution be after the addition of 15.0 mL of 1.00 M NaOH solution? [Ka = 1.80 x 10⁻⁵ for acetic acid.] A) 5.017 B) 4.74 C) 4.657 D) 4.473 E) 4.833

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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.142QP: K4 for acetic acid is 1.7 105 at 25C. A buffer solution is made by mixing 52.1 mL of 0.122 M acetic...
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You have 500.0 mL of a buffer solution containing 0.250 M acetic acid (CH₃COOH) and 0.240 M sodium acetate (CH₃COONa). What will the pH of this solution be after the addition of 15.0 mL of 1.00 M NaOH solution? [Ka = 1.80 x 10⁻⁵ for acetic acid.]
A) 5.017
B) 4.74
C) 4.657
D) 4.473
E) 4.833
 
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