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10. The following buffered solutions of weak acid (FHA spectrophotometrically in 2.00 cm cells 1.00 x 10-3 M) are measured %3D pH 7 8 19 10 11 0.000 0.163 0.750 1.172 1.240 1.250 1.250 Calculate Ka for the weak acid. Hint: start by identifying the absorbing form of the weak acid equilibrium, use the absorbance measurement to determine its as a function of pH and use the resulting line to concentration, plot log ( determine pKa• (HA)

10. The following buffered solutions of weak acid (FHA spectrophotometrically in 2.00 cm cells 1.00 x 10-3 M) are measured %3D pH 7 8 19 10 11 0.000 0.163 0.750 1.172 1.240 1.250 1.250 Calculate Ka for the weak acid. Hint: start by identifying the absorbing form of the weak acid equilibrium, use the absorbance measurement to determine its as a function of pH and use the resulting line to concentration, plot log ( determine pKa• (HA)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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10. The following buffered solutions of weak acid (FHA spectrophotometrically in 2.00 cm cells = 1.00 x 10-3 M) are measured pH 6. 7 8 10 11 A 0.000 0.163 0.750 1.172 1.240 1.250 1.250 Calculate Ka for the weak acid. Hint: start by identifying the absorbing form of the weak acid equilibrium, use the absorbance measurement to determine its as a function of pH and use the resulting line to concentration, plot log () (HA), determine pKa.
Transcribed Image Text:10. The following buffered solutions of weak acid (FHA spectrophotometrically in 2.00 cm cells = 1.00 x 10-3 M) are measured pH 6. 7 8 10 11 A 0.000 0.163 0.750 1.172 1.240 1.250 1.250 Calculate Ka for the weak acid. Hint: start by identifying the absorbing form of the weak acid equilibrium, use the absorbance measurement to determine its as a function of pH and use the resulting line to concentration, plot log () (HA), determine pKa.
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