Answered: Given the UV Spectrum of Anthracene…

Given the UV Spectrum of Anthracene pictured. Why does anthracene have such a structured UV-vis spectrum? How many bands can be identified and what are the bands due to?

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter6: Random Errors In Chemical Analysis

Section: Chapter Questions

Problem 6.13QAP

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Concept explainers

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.

Question

Given the UV Spectrum of Anthracene pictured. Why does anthracene have such a structured UV-vis spectrum? How many bands can be identified and what are the bands due to?

0.25
0.20
0.15
0.10
0.05
0.00
280
300
320
340
360
380
400
420
A(nm)
% Transmission
% Absorbtion
Absorbance

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