A student prepares an acetic acid/sodium acetate buffer by mixing 10.00 mL of 0.50 M acetic acid with 0.4102 g of sodium acetate. This buffer is then tested by adding 0.10 M HCI and 0.10 M NaOH, and the following data is obtained: 0.10 M HCI added 0.10 M NaOH added Buffer Volume (mL) 40.00 40.00 Amount of Acid/Base Added (ml) 17.06 18.71 Initial pH 4.75 4.75 Final pH 3.72 3: Calculate the buffer capacity for both the acid and base additions. 5.78 1: Calculate the concentration of acetic acid and acetate ion in the buffer. Considering these concentrations, what is significant about the initial pH of 4.75? 2: Which component (Acetic acid or Acetate ion) reacts with HCI? Which component (Acetic acid or Acetate ion) reacts with NaOH? Write the balanced neutralization reaction for both.

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.78QE
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A student prepares an acetic acid/sodium acetate buffer by mixing 10.00 mL of 0.50 M acetic acid with
0.4102 g of sodium acetate. This buffer is then tested by adding 0.10 M HCI and 0.10 M NaOH, and the
following data is obtained:
0.10 M HCI
added
0.10 M NaOH
added
Buffer Volume
(mL)
40.00
40.00
Amount of
Acid/Base
Added (mL)
17.06
18.71
Initial pH
4.75
4.75
Final pH
3.72
3: Calculate the buffer capacity for both the acid and base additions.
5.78
1: Calculate the concentration of acetic acid and acetate ion in the buffer. Considering these
concentrations, what is significant about the initial pH of 4.75?
2: Which component (Acetic acid or Acetate ion) reacts with HCI? Which component (Acetic acid or
Acetate ion) reacts with NaOH? Write the balanced neutralization reaction for both.
Transcribed Image Text:A student prepares an acetic acid/sodium acetate buffer by mixing 10.00 mL of 0.50 M acetic acid with 0.4102 g of sodium acetate. This buffer is then tested by adding 0.10 M HCI and 0.10 M NaOH, and the following data is obtained: 0.10 M HCI added 0.10 M NaOH added Buffer Volume (mL) 40.00 40.00 Amount of Acid/Base Added (mL) 17.06 18.71 Initial pH 4.75 4.75 Final pH 3.72 3: Calculate the buffer capacity for both the acid and base additions. 5.78 1: Calculate the concentration of acetic acid and acetate ion in the buffer. Considering these concentrations, what is significant about the initial pH of 4.75? 2: Which component (Acetic acid or Acetate ion) reacts with HCI? Which component (Acetic acid or Acetate ion) reacts with NaOH? Write the balanced neutralization reaction for both.
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