A solution of 2.50 M formic acid is 0.915% ionized. What is the pH of this solution? Enter your answer, rounded to the correct number of significant figures, in the box. pH = 2.54

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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A solution of 2.50 M formic acid is 0.915% ionized. What is the pH of this solution? Enter your answer, rounded to the correct number of significant figures, in the box.
pH =
X
2.54
A solution of HA, a weak acid (pKa = 8.112), has a pH = 5.770. [HA]eq = 3.12 x 10-4 M. What was the initial concentration of the weak acid solution? Enter your answer, rounded to
the correct number of significant figures, into the box below. If your answer is a decimal, put a O before the decimal point. Do not use scientific notation.
pH =
1
[weak acid] initially =
X
X
4.00
0.00404
An aqueous solution of 0.045 M HA (pKa = 11.11) is prepared. What is the pH of this solution? Enter your answer, rounded to the correct number of significant figures, in
box below. If your answer is a decimal, put a 0 before the decimal point. Do not use scientific notation.
M
1050301
the
Transcribed Image Text:1 A solution of 2.50 M formic acid is 0.915% ionized. What is the pH of this solution? Enter your answer, rounded to the correct number of significant figures, in the box. pH = X 2.54 A solution of HA, a weak acid (pKa = 8.112), has a pH = 5.770. [HA]eq = 3.12 x 10-4 M. What was the initial concentration of the weak acid solution? Enter your answer, rounded to the correct number of significant figures, into the box below. If your answer is a decimal, put a O before the decimal point. Do not use scientific notation. pH = 1 [weak acid] initially = X X 4.00 0.00404 An aqueous solution of 0.045 M HA (pKa = 11.11) is prepared. What is the pH of this solution? Enter your answer, rounded to the correct number of significant figures, in box below. If your answer is a decimal, put a 0 before the decimal point. Do not use scientific notation. M 1050301 the
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