0.92 M CH3COONa 1.10 M CH₂COOH Note: Reference the pk of acids at 25 °C table for additional information. Calculate the pH of 1.00 L of the buffer Part 1 of 3 pH of starting buffer: Round your answer to 2 decimal places. Part 2 of 3 X pH after addition of 0.055 0 S before and after the addition of the following species. (Assume there is no change in volume.) NaOH: Round your answer to G decimal places.

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 16.7QE
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Part 3: pH after addition of 0.145mol HCl: Round your answer to 2 decimal places

**Buffer pH Calculation Exercise**

Calculate the pH of 1.00 L of the buffer:

\[ \frac{0.92 \, \text{M} \, \text{CH}_3\text{COONa}}{1.10 \, \text{M} \, \text{CH}_3\text{COOH}} \]

before and after the addition of the following species. (Assume there is no change in volume.)

**Note:** Reference the \( pK_a \) of acids at 25 °C table for additional information.

---

**Part 1 of 3**

- **pH of starting buffer:** Round your answer to 2 decimal places.

  [Input box for answer]

---

**Part 2 of 3**

- **pH after addition of 0.055 mol NaOH:** Round your answer to 2 decimal places.

  [Input box for answer]

---

This exercise guides you through calculating the pH of a buffer solution and evaluating how it changes with the addition of a strong base like NaOH. Use the Henderson-Hasselbalch equation as needed.
Transcribed Image Text:**Buffer pH Calculation Exercise** Calculate the pH of 1.00 L of the buffer: \[ \frac{0.92 \, \text{M} \, \text{CH}_3\text{COONa}}{1.10 \, \text{M} \, \text{CH}_3\text{COOH}} \] before and after the addition of the following species. (Assume there is no change in volume.) **Note:** Reference the \( pK_a \) of acids at 25 °C table for additional information. --- **Part 1 of 3** - **pH of starting buffer:** Round your answer to 2 decimal places. [Input box for answer] --- **Part 2 of 3** - **pH after addition of 0.055 mol NaOH:** Round your answer to 2 decimal places. [Input box for answer] --- This exercise guides you through calculating the pH of a buffer solution and evaluating how it changes with the addition of a strong base like NaOH. Use the Henderson-Hasselbalch equation as needed.
Expert Solution
Step 1

Given ->

[CH3COOH] = 1.10 M 

[CH3COONa] = 0.92 M 

Volume= 1.00 L 

pKa = 4.76 

 

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