At a temperature of 298K the value of Ka for ethanoic acid is 1.70 * 10Smoldm. c. Calculate the pH of a solution of ethanoic acid with a concentration of 0.350moldm-3 at 298K. Pentanoic acid is another example of a weak acid. d. Calculate the value of Ka for a solution of 0.0500moldm³ pentanoic acid with a pH of 3.05 at a temperature of 298K. Give your answer to an appropriate number of significant figures.

Chemistry: Principles and Reactions
8th Edition
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Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter14: Equilibria In Acid-base Solutions
Section: Chapter Questions
Problem 77QAP: Two students were asked to determine the Kb of an unknown base. They were given a bottle with a...
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Answer part c
At a temperature of 298K the value of Ka for ethanoic acid is 1.70 *
10Smoldm3.
c. Calculate the pH of a solution of ethanoic acid with a concentration of
0.350moldm-3 at 298K.
Pentanoic acid is another example of a weak acid.
d. Calculate the value of Ka for a solution of O.0500moldm³ pentanoic acid with
a pH of 3.05 at a temperature of 298K. Give your answer to an appropriate
number of significant figures.
Transcribed Image Text:At a temperature of 298K the value of Ka for ethanoic acid is 1.70 * 10Smoldm3. c. Calculate the pH of a solution of ethanoic acid with a concentration of 0.350moldm-3 at 298K. Pentanoic acid is another example of a weak acid. d. Calculate the value of Ka for a solution of O.0500moldm³ pentanoic acid with a pH of 3.05 at a temperature of 298K. Give your answer to an appropriate number of significant figures.
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