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Spectroscopic data for the indicators thymol blue (TB), semithymol blue (STB), and

Quantitative Chemical Analysis | 8th Edition | ISBN: 9781429218153 | Authors: Daniel C. Harris ISBN: 9781429218153 475

Solution for problem 18-6 Chapter 18

Quantitative Chemical Analysis | 8th Edition

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Quantitative Chemical Analysis | 8th Edition | ISBN: 9781429218153 | Authors: Daniel C. Harris

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Problem 18-6

Spectroscopic data for the indicators thymol blue (TB), semithymol blue (STB), and methylthymol blue (MTB) are shown in the table. A solution of TB, STB, and MTB in a 1.000-cm cuvet had absorbances of 0.412 at 455 nm, 0.350 at 485 nm, and 0.632 at 545 nm. Modify the spreadsheet in Figure 18-5 to handle three simultaneous equations and find [TB], [STB], and [MTB] in the mixture. (nm) TB STB MTB 455 4 800 11 100 18 900 485 7 350 11 200 11 800 545 36 400 13 900 4 450 SOURCE: S. Kiciak, H. Gontarz, and E. Krzyz. anowska, Monitoring the Synthesis of Semimethylthymol Blue and Methylthymol Blue, Talanta 1995, 42, 1245.

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Chapter 18, Problem 18-6 is Solved
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Textbook: Quantitative Chemical Analysis
Edition: 8
Author: Daniel C. Harris
ISBN: 9781429218153

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Spectroscopic data for the indicators thymol blue (TB), semithymol blue (STB), and