The extinction coefficient for FD&C Blue Dye #1 is 138,500 cm-L/mol at 630 nm. A chemist collected the following data at 630 nm. The student also found that the absorbance of an FD&C Blue Dye #1 solution of unknown concentration was 0.244. Use your Vernier Graphical Analysis to generate a standard curve from this data set, and use it to determine the concentration of the unknown solution. (Report your final answer to 3 sig figs) Concentration of Blue Dye (M) Absorbance @ 630 nm 6.35x10-7 1.23x10-6 3.84x10-6 5.68x10-6 0.088 0.160 0.541 0.787

The extinction coefficient for FD&C Blue Dye #1 is 138,500 cm-L/mol at 630 nm. A chemist collected the following data at 630 nm. The student also found that the absorbance of an FD&C Blue Dye #1 solution of unknown concentration was 0.244. Use your Vernier Graphical Analysis to generate a standard curve from this data set, and use it to determine the concentration of the unknown solution. (Report your final answer to 3 sig figs) Concentration of Blue Dye (M) Absorbance @ 630 nm 6.35x10-7 1.23x10-6 3.84x10-6 5.68x10-6 0.088 0.160 0.541 0.787

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter14: Ultraviolet Spectroscopy, Refractive Indices, And Qualitative Instrumental Organic Analysis

Section: Chapter Questions

Problem 4Q

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Question

The extinction coefficient for FD&C Blue Dye #1 is 138,500 cm-L/mol at 630 nm. A chemist collected the
following data at 630 nm. The student also found that the absorbance of an FD&C Blue Dye #1 solution of
unknown concentration was 0.244. Use your Vernier Graphical Analysis to generate a standard curve from this
data set, and use it to determine the concentration of the unknown solution. (Report your final answer to 3 sig
figs)
Concentration
of Blue Dye (M)
Absorbance
@ 630 nm
6.35x10-7
1.23x10-6
3.84x10-6
0.088
|0.160
0.541
5.68x10-6
0.787

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