Choose one option only. Buffer A. prepared by mixing 1.32 mol NH3 and 3.26 mol NH4Cl into 2.20 L of solution. Ka (NH4+) = 5.6 x 10-10. Buffer B. prepared by mixing 1.18 mol HF and 2.48 mol NaF into 3.20 L of solution. Ka (HF) = 6.6 x 10-4. Buffer C. prepared by mixing 4.73 mol HOAc and 2.15 mol NaOAc into1.80 L of solution. Ka (HOAc) = 1.8 x 10-5. Options: a. The pH of Buffer A is between the pH values of Buffer B and Buffer C. b. Buffer C has the lowest pH. c. Buffer B has the lowest pH. d. Buffer A has the lowest pH. e. Buffer B and Buffer C have the same pH.
Choose one option only. Buffer A. prepared by mixing 1.32 mol NH3 and 3.26 mol NH4Cl into 2.20 L of solution. Ka (NH4+) = 5.6 x 10-10. Buffer B. prepared by mixing 1.18 mol HF and 2.48 mol NaF into 3.20 L of solution. Ka (HF) = 6.6 x 10-4. Buffer C. prepared by mixing 4.73 mol HOAc and 2.15 mol NaOAc into1.80 L of solution. Ka (HOAc) = 1.8 x 10-5. Options: a. The pH of Buffer A is between the pH values of Buffer B and Buffer C. b. Buffer C has the lowest pH. c. Buffer B has the lowest pH. d. Buffer A has the lowest pH. e. Buffer B and Buffer C have the same pH.
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter14: Equilibria In Acid-base Solutions
Section: Chapter Questions
Problem 31QAP: Enough water is added to the buffer in Question 29 to make the total volume 10.0 L. Calculate (a)...
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Question
Which of the following statements is correct concerning the 3 buffer solutions given below? Choose one option only.
Buffer A. prepared by mixing 1.32 mol NH3 and 3.26 mol NH4Cl into 2.20 L of solution. Ka (NH4+) = 5.6 x 10-10.
Buffer B. prepared by mixing 1.18 mol HF and 2.48 mol NaF into 3.20 L of solution. Ka (HF) = 6.6 x 10-4.
Buffer C. prepared by mixing 4.73 mol HOAc and 2.15 mol NaOAc into1.80 L of solution. Ka (HOAc) = 1.8 x 10-5.
Options:
| a. | The pH of Buffer A is between the pH values of Buffer B and Buffer C. |
| b. |
Buffer C has the lowest pH. |
| c. |
Buffer B has the lowest pH. |
| d. |
Buffer A has the lowest pH. |
| e. |
Buffer B and Buffer C have the same pH. |
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