A buffer is made by adding 0.18 mol/L of sodium propanoate (NaPr) to 0.12 mol/L solution of propanoic acid (HPr, K«= 1.3 x 10-5). Assume the volume of the solution to be 1.0 L. a) Write the chemical equation for the acid hydrolysis reaction. | b) What is the acid-base conjugate pair that governs the pH of the buffer? c) Calculate the pH of the buffer. Be sure to justify and validate any approximations used.
A buffer is made by adding 0.18 mol/L of sodium propanoate (NaPr) to 0.12 mol/L solution of propanoic acid (HPr, K«= 1.3 x 10-5). Assume the volume of the solution to be 1.0 L. a) Write the chemical equation for the acid hydrolysis reaction. | b) What is the acid-base conjugate pair that governs the pH of the buffer? c) Calculate the pH of the buffer. Be sure to justify and validate any approximations used.
General Chemistry - Standalone book (MindTap Course List)
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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.148QP
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![A buffer is made by adding 0.18 mol/L of sodium propanoate (NaPr) to 0.12 mol/L
solution of propanoic acid (HPr, K«= 1.3 x 10-5). Assume the volume of the solution to
be 1.0 L.
a) Write the chemical equation for the acid hydrolysis reaction.
|
b) What is the acid-base conjugate pair that governs the pH of the buffer?
c) Calculate the pH of the buffer. Be sure to justify and validate any
approximations used.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F23261c43-c05c-49aa-876f-eb0e9adc83d0%2Fdc64a581-1791-4f1f-823f-fbe1d002d8f5%2Fia58zjd.png&w=3840&q=75)
Transcribed Image Text:A buffer is made by adding 0.18 mol/L of sodium propanoate (NaPr) to 0.12 mol/L
solution of propanoic acid (HPr, K«= 1.3 x 10-5). Assume the volume of the solution to
be 1.0 L.
a) Write the chemical equation for the acid hydrolysis reaction.
|
b) What is the acid-base conjugate pair that governs the pH of the buffer?
c) Calculate the pH of the buffer. Be sure to justify and validate any
approximations used.
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