Concept explainers
(a)
Interpretation:
The energy of radiation in both IR and UV spectroscopy has to be compared.
Concept Introduction:
IR spectral studies: It is a spectroscopic technique which is used to determine the
Absorption spectrum: This is measurement of the amount of (UV-VIS) light absorbed by a liquid sample of a given path length. Absorbance is directly proportional to the concentration of matter in the sample.
The energy E of
Therefore,
Where, E is the energy, h is the Plank’s constant
(b)
Interpretation:
The wavelength of radiation in both IR and UV spectroscopy has to be compared.
Concept Introduction:
Refer to a.
(c)
Interpretation:
The frequency of radiation in both IR and UV spectroscopy has to be compared.
Concept Introduction:
Refer to (a).
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Chemistry: The Molecular Science
- Assign infrared spectraarrow_forward2. Discuss the different factors that affect the absorbance of a solution.arrow_forwardCovalent bonds in a molecule absorb radiation in the IR region and vibrate at characteristic frequencies. (a) The C---O bond absorbs radiation of wavelength 9.6 mm. What frequency (in s-1) corresponds to that wavelength? (b) The H---Cl bond has a frequency of vibration of 8.652x1013 Hz. What wavelength (in mm) corresponds to that frequency?arrow_forward
- Describe the essential features in the infrared spectrum for this compoundarrow_forwardWhat is the relationship between pathlength and absorbance? Explain this relationship based on your understanding of what is occurring at the molecular level as photons of light travel through the sample.arrow_forward3) Explain how the market for opticians is affected as a result of the development of laser technology which reduces the demand for glasses and contact lenses. In your explanation be sure to show the connection between the market for glasses and contact lenses and the market for opticians.arrow_forward
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- 2. Molecules absorb IR radiation consistent with vibrational energy and rotational energy. Which of these is present in condensed phases (liquid, solution, solid)?arrow_forwardGiven that the percent transmittance of light through a sample was 27.6% what is the absorbance of the solution? Rounded to two sig figs.arrow_forwardElliptical cavity is used in Nd:YAG laser to provide better absorption of incident light. Explain . 2) In a coherent state all photons condense into one state . Explain.arrow_forward
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