Please Any help is greatly appreciated 1 Atomic absorption spectra consist of di
ID: 539144 • Letter: P
Question
Please Any help is greatly appreciated
1 Atomic absorption spectra consist of discrete lines at separate wavelengths, indicating electronic transitions between quantized energy states. In contrast, molecular absorption spectra consist of broad peaks that encompass tens or even hundreds of wavelengths. Does this means that the electronic transitions are not quantized? Why or why not? Explain your reasoning, You may find it useful to review Appendix C on molecular spectroscopy as you answer this question. 2 Consider the colors of the three food dyes you will investigate in this activity (Fig. 7.8). Predict the region of the visible spectrum where you expect to observe the greatest absorption for each dye, and explain your reasoning. What does the molar absorptivity of a molecule represent? Define this term in your own words. You may find it useful to review Appendix D on Beer's law as you answer this question. 3 CHAPTER 7 Molecular Structure and Its Consequences 221Explanation / Answer
1) Electronic transistions are quantized. An electron with some energy lands at different states
which is defined by a discrete set of values. However its orginal state is a composition of
large set of values.
2) Maximum absorption ranges for 3 food dyes
red dye - 620 to 750 nm ; blue dye - 450 to 495 nm ; Yellow - 570 to 590 nm
3) To determine absorption capacity of the molecule on a certain defined scale