Consider the following statements as they apply to infrared spectroscopy. Decide if each is true or false. True False The quantized nature of molecular vibrations are generally understood in terms of a rigid rotor model. True False Absorption bands in infrared spectroscopy are due to vibrational and rotational-vibrational transitions in molecules. True False For a given pair of atoms, the vibrational frequency expected if they are joined by a single bond should be higher than if they are joined by a double bond. True False Because molecules in condensed phases (solids and liquid) are not free to rotate, rotational-vibrational transitions are not observed in their infrared spectra. For this reason, even at high resolution, a condensed phase spectrum is characterized by broad bands. True False Heteronuclear diatomic molecules such as HCl do not absorb infrared radiation.
Consider the following statements as they apply to infrared spectroscopy. Decide if each is true or false. True False The quantized nature of molecular vibrations are generally understood in terms of a rigid rotor model. True False Absorption bands in infrared spectroscopy are due to vibrational and rotational-vibrational transitions in molecules. True False For a given pair of atoms, the vibrational frequency expected if they are joined by a single bond should be higher than if they are joined by a double bond. True False Because molecules in condensed phases (solids and liquid) are not free to rotate, rotational-vibrational transitions are not observed in their infrared spectra. For this reason, even at high resolution, a condensed phase spectrum is characterized by broad bands. True False Heteronuclear diatomic molecules such as HCl do not absorb infrared radiation.
Physical Chemistry
2nd Edition
ISBN:9781133958437
Author:Ball, David W. (david Warren), BAER, Tomas
Publisher:Ball, David W. (david Warren), BAER, Tomas
Chapter18: More Statistical Thermodynamics
Section: Chapter Questions
Problem 18.55E
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