weak acids. Use the Ka values in the following table to help answer some of the questions. a) Using the Ka expression, explain how to determine which solution has the lower pH, 0.10 M HF or 0.10M HC2H3O2. Do not perform any numerical calculations. b) Which solution has a higher percent of ionization of the acid, a 0.10 M solution of HC2H3O2 or a 0.010 solution of HC2H3O2? Justify your answer including the calculation of percent ionization for each solution.

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 62P
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Answer the following questions about weak acids. Use the Ka values in the following table to help answer some
of the questions.

a) Using the Ka expression, explain how to determine which solution has the lower pH, 0.10 M HF or
0.10M HC2H3O2. Do not perform any numerical calculations.

b) Which solution has a higher percent of ionization of the acid, a 0.10 M solution of HC2H3O2 or a
0.010 solution of HC2H3O2? Justify your answer including the calculation of percent ionization for
each solution.

Free Response
1. Answer the following questions about weak acids. Use the Ka values in the following table to help answer some
of the questions.
Acid
Ka
HF
6.7 x 10-4
HC2H3O2
1.8 x 10-5
a) Using the Ka expression, explain how to determine which solution has the lower pH, 0.10 M HF or
0.10M HC2H3O2. Do not perform any numerical calculations.
b) Which solution has a higher percent of ionization of the acid, a 0.10 M solution of HC,H3O2 or a
0.010 solution of HC2H3O2? Justify your answer including the calculation of percent ionization for
each solution.
Transcribed Image Text:Free Response 1. Answer the following questions about weak acids. Use the Ka values in the following table to help answer some of the questions. Acid Ka HF 6.7 x 10-4 HC2H3O2 1.8 x 10-5 a) Using the Ka expression, explain how to determine which solution has the lower pH, 0.10 M HF or 0.10M HC2H3O2. Do not perform any numerical calculations. b) Which solution has a higher percent of ionization of the acid, a 0.10 M solution of HC,H3O2 or a 0.010 solution of HC2H3O2? Justify your answer including the calculation of percent ionization for each solution.
Expert Solution
Step 1

In the given question we have to predict which one of the acid has lowered pH and acidic by using the Ka given in the table, 

secondly, to find out percent ionization of the following concentration which one has greater ionization.

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