A buffer solution is prepared in such a way that the concentration of propanoic acid is 8.5 × 10−1 M and the concentration of sodium propanoate is 2.0 × 10−1 M. The buffer equilibrium is described by C2H5COOH(aq) + H2O(l) ⇌ H3O+(aq) + C2H5COO−(aq) propanoic acid propanoate ion with Ka = 1.34 × 10−5. If the concentration of the sodium propanoate were doubled while the acid concentration remained the same, calculate the pH of the resulting solution. pH=________

pH of buffer solution is calculated by using Henderson-Hasselbalch equation. pH = pKa +…

Answered: A buffer solution is prepared in such a…

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 solution is prepared in such a way that the concentration of propanoic acid is 8.5 × 10⁻¹ M and the concentration of sodium propanoate is 2.0 × 10⁻¹ M. The buffer equilibrium is described by

C₂H₅COOH(aq)

H₂O(l)

⇌

H₃O⁺(aq)

C₂H₅COO⁻(aq)

propanoic acid propanoate ion

with K_a = 1.34 × 10⁻⁵. If the concentration of the sodium propanoate were doubled while the acid concentration remained the same, calculate the pH of the resulting solution.

pH=________

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