CHM402 Tma Solutions
For which of the following molecules would you expect the infrared active fundamentals to be Raman inactive and vice versa?
nitrogen(IV) oxide
fluorobenzene
—>> benzene
fluoroethene
Which of these is not found in a Raman spectrometer?
lenses and mirrors
monochromator
—>> osciloscope
detector
The wavelength of an absorption is 495 nm. In what part of the electromagnetic spectrum does this lie?
Microwave.
infra-red
—>> UV-Visible
Radiowave
A photon of wavenumber \(100 cm^{-1}\) has a wavelength of
1 m
—>> 1 mm
1000 nm
100 m
Which section of the electromagnetic spectrum is responsible for molecular vibration?
—>> Infra-red
Ultraviolet
Microwave
gamma rays
Identify the most intense line
Raman line
—>> Rayleigh line
Stokes’ line
antiStokes’ line
How many normal modes of vibration are there for \(C_{60}\) ?
—>> 174
180
60
175
Which is associated with elastic scattering?
Raman line
—>> Rayleigh line
Stokes’ line
antiStokes’ line
Which of these is not an in-plane vibrational mode?
stretching
—>> twisting
scissoring
rocking
Which statement is true?
symmetric stretching require higher energy than asymmetric stretching
—>> bending vibrations require lower energy than stretching
bending vibrations require higher energy that stretching
both bending and stretching require similar energies
JOIN OUR TELEGRAM ON VIP NOUN UPDATES – FOR FREE CHM402 PAST QUESTIONS AND EXAMS SUMMARIES
