a) A 0.10 M aqueous solution of propanoic acid, CH3CH2COOH, has a pH of 2.93.What is the value of pKa for propanoic acid? b) A buffer is prepared by mixing 50.0 mL of a 0.150 M sodium formate (NaHCO2)solution with 50.0 mL of a 0.0710 M hydrochloric acid (HCl) solution. What is thepH of the buffer solution?The Ka for formic acid (HCOOH) is 1.82 x 10-4.

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Answered: a) A 0.10 Maqueous solution of…

a) A 0.10 Maqueous solution of propanoic acid, CH3CH2COOH, has a pH of 2.93. What is the value of pKa for propanoic acid?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter14: Acids And Bases

Section: Chapter Questions

Problem 57QRT: The pH of a 0.10-M solution of propanoic acid, CH3CH2COOH, a weak organic acid, is measured at...

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a) A 0.10 M aqueous solution of propanoic acid, CH3CH2COOH, has a pH of 2.93.
What is the value of pKa for propanoic acid?

b) A buffer is prepared by mixing 50.0 mL of a 0.150 M sodium formate (NaHCO2)
solution with 50.0 mL of a 0.0710 M hydrochloric acid (HCl) solution. What is the
pH of the buffer solution?
The Ka for formic acid (HCOOH) is 1.82 x 10-4.

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