Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![### Buffer Solution Calculations
**Be sure to answer all parts.**
Calculate the pH of the following two buffer solutions:
(a) \(2.2 \, M \, \text{CH}_3\text{COONa}/2.7 \, M \, \text{CH}_3\text{COOH}\).
- [ _Box for answer_ ]
(b) \(0.2 \, M \, \text{CH}_3\text{COONa}/0.3 \, M \, \text{CH}_3\text{COOH}\).
- [ _Box for answer_ ]
**Which is the more effective buffer?**
- (A) \(2.2 \, M \, \text{CH}_3\text{COONa}/2.7 \, M \, \text{CH}_3\text{COOH}\)
- (B) \(0.2 \, M \, \text{CH}_3\text{COONa}/0.3 \, M \, \text{CH}_3\text{COOH}\)
**Explanation and Instructions:**
- Determine the pH of each buffer solution using the Henderson-Hasselbalch equation.
- Compare the buffering capacities by examining the concentrations and the ratio of the components.
- Consider the closeness of the solution’s pH to the pKa of acetic acid for determining efficacy.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6b9a5e3a-13c3-426b-8948-52c1d49e3a86%2F86b8c00a-8034-419d-b051-d81f5ace80a0%2Fshyba63_processed.png&w=3840&q=75)
Transcribed Image Text:### Buffer Solution Calculations
**Be sure to answer all parts.**
Calculate the pH of the following two buffer solutions:
(a) \(2.2 \, M \, \text{CH}_3\text{COONa}/2.7 \, M \, \text{CH}_3\text{COOH}\).
- [ _Box for answer_ ]
(b) \(0.2 \, M \, \text{CH}_3\text{COONa}/0.3 \, M \, \text{CH}_3\text{COOH}\).
- [ _Box for answer_ ]
**Which is the more effective buffer?**
- (A) \(2.2 \, M \, \text{CH}_3\text{COONa}/2.7 \, M \, \text{CH}_3\text{COOH}\)
- (B) \(0.2 \, M \, \text{CH}_3\text{COONa}/0.3 \, M \, \text{CH}_3\text{COOH}\)
**Explanation and Instructions:**
- Determine the pH of each buffer solution using the Henderson-Hasselbalch equation.
- Compare the buffering capacities by examining the concentrations and the ratio of the components.
- Consider the closeness of the solution’s pH to the pKa of acetic acid for determining efficacy.
Expert Solution
Step 1
Buffer solutions are those solutions that resist the change in upon addition of a small amount of acid or base.
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