Physical Chemistry
2nd Edition
ISBN: 9781133958437
Author: Ball, David W. (david Warren), BAER, Tomas
Publisher: Wadsworth Cengage Learning,
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Chapter 14, Problem 14.91E
Interpretation Introduction
Interpretation:
The reason as to why line
Concept introduction:
The P and R branch of lines are produced because of rotational and vibrational spectrum occurring together. The P and R branch of lines are due to change in the rotational level of molecule with the vibrational change. There are some selection rules for the transitions to occur according to whichthese lines are formed and named as P and R branch lines.
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1. In a ro-vibrational spectrum, which branch (P or R) lies at short wavelengths? Explain.
2. The values of B₁ and Bo in a diatomic molecule are different, which is larger? Explain.
3. What causes the differences in peak heights for a rotational spectra.
4. What is meant by centrifugal distortion? How do we correct for it in a rotational spectra?
The right-hand diagram shows electronic and vibrational levels for a diatomic molecule.
Indicate which peaks in the spectrum below correspond to which vibrational transition.
Explain the difference in the intensity of the vibrational peaks in the spectrum from part a. Why is the first peak the most intense?
Explain why Infrared spectroscopy is sometimes called vibrational spectroscopy.
Chapter 14 Solutions
Physical Chemistry
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