A buffer was prepared by mixing 100.0 mL 0.500 M of the acid (shown on the left) with 50.0 mL 0.500 M of the salt shown on the right. After preparation, a 10.0 mL aliquot is tested for its buffer capacity by adding 10.0 mL of 0.050 M HCI solution. What is the resulting pH of the aliquot with the added acid? Write answer in 3 significant figures.

General, Organic, and Biological Chemistry
7th Edition
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:H. Stephen Stoker
Chapter10: Acids, Bases, And Salts
Section: Chapter Questions
Problem 10.118EP: Using the diagrams shown in Problem 10-117, which of the solutions would have the greatest buffer...
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A buffer was prepared by mixing 100.0 mL 0.500 M of the acid (shown on the left) with 50.0 mL 0.500 M of the salt shown on the right.
After preparation, a 10.0 mL aliquot is tested for its buffer capacity by adding 10.0 mL of 0.050 M HCI solution.
What is the resulting pH of the aliquot with the added acid? Write answer in 3 significant figures.
но
pka 2.19
OH PKa 4.25
Na
OH PKa 4.25
NH,
pka 9.57
NH,
pka 9.67
100.0 ml. (0.500 M)
50.0 ml (0.500 M)
Transcribed Image Text:A buffer was prepared by mixing 100.0 mL 0.500 M of the acid (shown on the left) with 50.0 mL 0.500 M of the salt shown on the right. After preparation, a 10.0 mL aliquot is tested for its buffer capacity by adding 10.0 mL of 0.050 M HCI solution. What is the resulting pH of the aliquot with the added acid? Write answer in 3 significant figures. но pka 2.19 OH PKa 4.25 Na OH PKa 4.25 NH, pka 9.57 NH, pka 9.67 100.0 ml. (0.500 M) 50.0 ml (0.500 M)
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