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The indicator HIn has an acid dissociation constant of 4.80 × 10-6 at ordinary temperatures. The accompanying absorban data are for 8.00 × 10-5 M solutions of the indicator measured in 1.00-cm cells in strongly acidic and strongly alkaline media: Absorbance

The indicator HIn has an acid dissociation constant of 4.80 × 10-6 at ordinary temperatures. The accompanying absorban data are for 8.00 × 10-5 M solutions of the indicator measured in 1.00-cm cells in strongly acidic and strongly alkaline media: Absorbance

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The indicator HIn has an acid dissociation constant of 4.80 × 10-6 at ordinary temperatures. The accompanying absorbance data are for 8.00 × 10-5 M solutions of the indicator measured in 1.00-cm cells in strongly acidic and strongly alkaline media: X, nm 450 595 Absorbance pH 1.00 0.658 0.032 PH 13.00 0.076 0.361 Several buffer solutions were made 1.30 × 10-4 M in the indicator. Absorbance data (1.00-cm cells) are A595 0.300 0.229 0.155 0.369 Solution A450 A 0.368 B 0.505 с 0.659 D 0.207 a Calculate the pH of the solution A. pH = b Calculate the pH of the solution B. pH =
Transcribed Image Text:The indicator HIn has an acid dissociation constant of 4.80 × 10-6 at ordinary temperatures. The accompanying absorbance data are for 8.00 × 10-5 M solutions of the indicator measured in 1.00-cm cells in strongly acidic and strongly alkaline media: X, nm 450 595 Absorbance pH 1.00 0.658 0.032 PH 13.00 0.076 0.361 Several buffer solutions were made 1.30 × 10-4 M in the indicator. Absorbance data (1.00-cm cells) are A595 0.300 0.229 0.155 0.369 Solution A450 A 0.368 B 0.505 с 0.659 D 0.207 a Calculate the pH of the solution A. pH = b Calculate the pH of the solution B. pH =
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