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Calculate pKa using both methods explained in the article. Show all your work and make sure to attach two graphs: a) Dependence of absorbance HIn and In- on pH

Calculate pKa using both methods explained in the article. Show all your work and make sure to attach two graphs: a) Dependence of absorbance HIn and In- on pH

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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I would need help with this question: The equation will be attached and the graph

Her experimental results are given below:

pH Abs at lambda435 nm Abs at lambda620 nm
2.2 0.106 0.001
5.5 0.112 0.014
6.2 0.117 0.017
7.5 0.067 0.145
8.1 0.051 0.230
11.8 0.019 0.287

Calculate pKa using both methods explained in the article. Show all your work and make sure to attach two graphs:

a) Dependence of absorbance HIn and In- on pH

 

 
Amax,21 (for Hln) pKa Amax,x2 (for In) Ax2 PH
Transcribed Image Text:Amax,21 (for Hln) pKa Amax,x2 (for In) Ax2 PH
[In] A22/A22,highest pH [HIN] A21/A21,lowest pH
Transcribed Image Text:[In] A22/A22,highest pH [HIN] A21/A21,lowest pH
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