General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter1: Chemistry And Measurement
Section: Chapter Questions
Problem 1.88QP
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Question
The absorbance of a solution of a weak acid was measured in the same condoitions under a series of pH values. Its conjugate base is the only species in the solution that absorbs UV light at the wavelength used. Estimate the pKa of the acid from the data obtained
Transcribed Image Text:pH
Absorbance
1.0
2.0
3.0
4.0
8.0
10.0
5.0
7.0
1.50
6.0
9.0
0.80
1.10
1.60
0.10
0.50
1.60
1.60
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