Which of the following pairs will make a buffer?

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...
icon
Related questions
Question
Which of the following pairs will make a buffer?
**Buffer Solutions**

**Question 17 of 17**

**Which of the following pairs will make a buffer?**

A) HF/NaF

B) HNO₃/KNO₃

C) H₂O/NaOH

D) H₂CO₃/NaOH

E) All of these will make buffers.

A buffer solution consists of a weak acid and its conjugate base, or a weak base and its conjugate acid. A solution made from the combination of such pairs will resist changes in pH when small amounts of an acid or base are added. Let's analyze each pair:

- **Option A (HF/NaF)**: HF (hydrofluoric acid) is a weak acid and NaF (sodium fluoride) ionizes to produce F⁻, the conjugate base of HF. This pair can effectively make a buffer solution.
  
- **Option B (HNO₃/KNO₃)**: HNO₃ (nitric acid) is a strong acid, and KNO₃ (potassium nitrate) does not affect the pH significantly. This pair does not form a buffer.
  
- **Option C (H₂O/NaOH)**: Water (H₂O) and sodium hydroxide (NaOH) do not form a buffer because H₂O is not a weak acid or base.
  
- **Option D (H₂CO₃/NaOH)**: H₂CO₃ (carbonic acid) is a weak acid, but NaOH is a strong base. Instead of forming a buffer, NaOH will neutralize H₂CO₃.
  
- **Option E**: This option claims that all pairs listed will make buffers, but this statement is incorrect based on the above analysis.

In conclusion, the correct answer is **Option A (HF/NaF)**.
Transcribed Image Text:**Buffer Solutions** **Question 17 of 17** **Which of the following pairs will make a buffer?** A) HF/NaF B) HNO₃/KNO₃ C) H₂O/NaOH D) H₂CO₃/NaOH E) All of these will make buffers. A buffer solution consists of a weak acid and its conjugate base, or a weak base and its conjugate acid. A solution made from the combination of such pairs will resist changes in pH when small amounts of an acid or base are added. Let's analyze each pair: - **Option A (HF/NaF)**: HF (hydrofluoric acid) is a weak acid and NaF (sodium fluoride) ionizes to produce F⁻, the conjugate base of HF. This pair can effectively make a buffer solution. - **Option B (HNO₃/KNO₃)**: HNO₃ (nitric acid) is a strong acid, and KNO₃ (potassium nitrate) does not affect the pH significantly. This pair does not form a buffer. - **Option C (H₂O/NaOH)**: Water (H₂O) and sodium hydroxide (NaOH) do not form a buffer because H₂O is not a weak acid or base. - **Option D (H₂CO₃/NaOH)**: H₂CO₃ (carbonic acid) is a weak acid, but NaOH is a strong base. Instead of forming a buffer, NaOH will neutralize H₂CO₃. - **Option E**: This option claims that all pairs listed will make buffers, but this statement is incorrect based on the above analysis. In conclusion, the correct answer is **Option A (HF/NaF)**.
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Alkanes and Cycloalkanes
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY