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Basics of vibrational spectroscopy
Introduction
A little theory
Illustrating theory
Interpretation of IR spectra
Get some practice
To find out more
Quiz: What do you remember about the IR spectrum?
In the following spectrum, H
2
O vibrations are broad because the molecule is subjected to:
A mesomeric effect
Hydrogen bonds
A mesomeric effect and hydrogen bonds
In IR peak intensity depends on:
The number of groups in the molecule
The electronegativity difference between 2 atoms
The difference in mass between 2 atoms
The number of groups present and the electronegativity difference between 2 atoms
The number of groups present and the difference in mass between 2 atoms
Combination bands in IR are:
Small
Small and narrow
Narrow
Wide
Intense and narrow
Intense and wide
Small and wide
In IR, combination bands are transitions from the vibrational sub-level 0 to an sub-level superior to state 1:
True
False
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