Review Topics] References) Use the References to access important values if needed for this question. Which of the following aqueous solutions are good buffer systems? (Select all that apply.) 0.21 M hypochlorous acid + 0.11 M potassium hypochlorite 0.25 M nitric acid + 0.20 M sodium nitrate 0.25 M ammonium bromide + 0.35 M ammonia 0.19 M sodium hydroxide + 0.25 M sodium bromide 0.33 M hydrofluoric acid + 0.30 M sodium fluoride

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 System Identification in Aqueous Solutions**

**Question:**
Which of the following aqueous solutions are good buffer systems? *(Select all that apply.)*

1. \(0.21 \, \text{M hypochlorous acid} + 0.11 \, \text{M potassium hypochlorite}\)
2. \(0.25 \, \text{M nitric acid} + 0.20 \, \text{M sodium nitrate}\)
3. \(0.25 \, \text{M ammonium bromide} + 0.35 \, \text{M ammonia}\)
4. \(0.19 \, \text{M sodium hydroxide} + 0.25 \, \text{M sodium bromide}\)
5. \(0.33 \, \text{M hydrofluoric acid} + 0.30 \, \text{M sodium fluoride}\)

**Submission Options:**
- **Submit Answer**: Finalize and submit your selected responses.
- **Retry Entire Group**: Reset all choices and attempt again.

**Note:**
You have 9 more group attempts remaining.

**Instructional Hint:**
Use the provided references to access key values if needed to determine buffer systems. 

**Explanation:**
Buffers consist of a weak acid and its conjugate base or a weak base and its conjugate acid. Identify which combinations meet this criterion.

**Meta:**
This information is used during the learning process to help students understand and identify chemical buffer systems effectively.
Transcribed Image Text:**Buffer System Identification in Aqueous Solutions** **Question:** Which of the following aqueous solutions are good buffer systems? *(Select all that apply.)* 1. \(0.21 \, \text{M hypochlorous acid} + 0.11 \, \text{M potassium hypochlorite}\) 2. \(0.25 \, \text{M nitric acid} + 0.20 \, \text{M sodium nitrate}\) 3. \(0.25 \, \text{M ammonium bromide} + 0.35 \, \text{M ammonia}\) 4. \(0.19 \, \text{M sodium hydroxide} + 0.25 \, \text{M sodium bromide}\) 5. \(0.33 \, \text{M hydrofluoric acid} + 0.30 \, \text{M sodium fluoride}\) **Submission Options:** - **Submit Answer**: Finalize and submit your selected responses. - **Retry Entire Group**: Reset all choices and attempt again. **Note:** You have 9 more group attempts remaining. **Instructional Hint:** Use the provided references to access key values if needed to determine buffer systems. **Explanation:** Buffers consist of a weak acid and its conjugate base or a weak base and its conjugate acid. Identify which combinations meet this criterion. **Meta:** This information is used during the learning process to help students understand and identify chemical buffer systems effectively.
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