01:160:307 Study Guide - Midterm Guide: Aldehyde, Wavenumber, Alkene
BIAF 7e Test Bank 1
CHAPTER 12—INFRARED SPECTROSCOPY
MULTIPLE CHOICE
1. Which of the following regions in the electromagnetic spectrum corresponds to the radiation with the
highest energy?
a.
radio waves
b.
ultraviolet
c.
infrared
d.
visible
ANS: B
2. Which of the following regions in the electromagnetic spectrum corresponds to the radiation with the
longest wavelength?
a.
radio waves
b.
ultraviolet
c.
infrared
d.
visible
ANS: A
3. What range of wavelengths corresponds to the infrared region of the electromagnetic spectrum?
a.
200-400 nm
b.
400-700 nm
c.
2.5-50 m
d.
2-10 mm
ANS: C
4. Which of the following processes takes place upon absorption of infrared radiation?
a.
bond vibration
b.
electron excitation
c.
nuclear spin flip
d.
electron spin flip
ANS: A
5. What are the units of wavenumber, , in infrared spectroscopy?
a.
cm
b.
cm1
c.
Jmol1
d.
none, wavenumber is a dimensionless quantity
ANS: B
6. Which of the following relationships is not valid as applied to infrared spectroscopy?
a.
wavenumber = 1/
(in cm)
b.
E = h
c.
E =
d.
= 4.12 (K/
)
ANS: C
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Document Summary
Multiple choice: which of the following regions in the electromagnetic spectrum corresponds to the radiation with the infrared highest energy? radio waves, ultraviolet, visible. Ans: b: which of the following regions in the electromagnetic spectrum corresponds to the radiation with the infrared radio waves longest wavelength, ultraviolet, visible. Ans: a: what range of wavelengths corresponds to the infrared region of the electromagnetic spectrum, 200-400 nm, 400-700 nm, 2. 5-50 m, 2-10 mm. Ans: c: which of the following processes takes place upon absorption of infrared radiation, bond vibration, electron excitation, nuclear spin flip, electron spin flip. Ans: a: what are the units of wavenumber, , in infrared spectroscopy: cm, cm 1, j mol 1, none, wavenumber is a dimensionless quantity. Ans: b: which of the following relationships is not valid as applied to infrared spectroscopy, wavenumber = 1/ (in cm, e = h , e = , = 4. 12 (k/ )
