10. Calculate the pH of a solution in which 32.0 ml of 0.150 M KOH has been added to 28.0 ml of 0.100 M HCI.

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 28QRT: Calculate the pH change when 10.0 mL of 0.100-M NaOH is added to 90.0 mL pure water, and compare the...
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13. In each of the following cases, indicate if the pH will be significantly changed
and, if so, how it will be altered. Write net ionic equations to support your
answers.
a. HCl is added to a solution of NaOH
b. HCI is added to a solution of ammonia
C. HCI is added to an acetic acid/sodium acetate buffer
d. NaOH is added to an acetic acid/sodium acetate buffer
e. NaOH is added to a solution of HCI.
f. NaOH is added to an ammonia/ammonium chloride buffer
g. HCI is added to an ammonia/ammonium chloride buffer.
14. What is the pH of the best buffer that can be made from benzoic acid,
HC-H,O2, and sodium benzoate, NaCHsO2?
K = 6.4 x 10 for benzoic acid.
Transcribed Image Text:13. In each of the following cases, indicate if the pH will be significantly changed and, if so, how it will be altered. Write net ionic equations to support your answers. a. HCl is added to a solution of NaOH b. HCI is added to a solution of ammonia C. HCI is added to an acetic acid/sodium acetate buffer d. NaOH is added to an acetic acid/sodium acetate buffer e. NaOH is added to a solution of HCI. f. NaOH is added to an ammonia/ammonium chloride buffer g. HCI is added to an ammonia/ammonium chloride buffer. 14. What is the pH of the best buffer that can be made from benzoic acid, HC-H,O2, and sodium benzoate, NaCHsO2? K = 6.4 x 10 for benzoic acid.
10. Calculate the pH of a solution in which 32.0 ml of 0.150 M KOH has been
added to 28.0 ml of 0.100 M HCI.
11. Calculate the pH of a buffer consisting of 1.25 M acetic acid and 0.75 M
potassium acetate. Ka = 1.8 x 10 for acetic acid.
%3D
12. Calculate the pH of a buffer consisting of 0.590 moles of ammonia and
1.57 moles ammonium chloride. K, = 1.8 x 10 for ammonia.
Transcribed Image Text:10. Calculate the pH of a solution in which 32.0 ml of 0.150 M KOH has been added to 28.0 ml of 0.100 M HCI. 11. Calculate the pH of a buffer consisting of 1.25 M acetic acid and 0.75 M potassium acetate. Ka = 1.8 x 10 for acetic acid. %3D 12. Calculate the pH of a buffer consisting of 0.590 moles of ammonia and 1.57 moles ammonium chloride. K, = 1.8 x 10 for ammonia.
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