3. Assume that you prepare a buffer by mixing 42 ml of 0.26 M acetic acid and 56 ml of 0.15 M sodium acetate (the pKa of acetic acid is 4.8). a) What is the pH of the buffer? b) What will be the pH if you add 2 ml of 0.2 M HCI to the buffer?

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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.78QP: A buffer is prepared by mixing 525 mL of 0.50 M formic acid, HCHO2, and 475 mL of 0.50 M sodium...
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3. Assume that you prepare a buffer by mixing 42 ml of 0.26 M acetic acid and 56 ml of 0.15 M
sodium acetate (the pKa of acetic acid is 4.8).
a) What is the pH of the buffer?
b) What will be the pH if you add 2 ml of 0.2 M HCI to the buffer?
Transcribed Image Text:3. Assume that you prepare a buffer by mixing 42 ml of 0.26 M acetic acid and 56 ml of 0.15 M sodium acetate (the pKa of acetic acid is 4.8). a) What is the pH of the buffer? b) What will be the pH if you add 2 ml of 0.2 M HCI to the buffer?
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