
Concept explainers
What major IR absorptions are present above
a. b.
c.
d.

(a)
Interpretation: The major IR absorptions present above
Concept introduction: IR spectroscopy is used to identify the functional group present in a compound. Each and every bond vibrates at a characteristic frequency.
Answer to Problem 13.42P
The major IR absorption peaks are observed for
Explanation of Solution
The given compound is ethynylcyclohexane as shown below.
Figure 1
It contains
The major IR absorption peaks are observed for

(b)
Interpretation: The major IR absorptions present above
Concept introduction: IR spectroscopy is used to identify the functional group present in a compound. Each and every bond vibrates at a characteristic frequency.
Answer to Problem 13.42P
The major IR absorptions are observed for
Explanation of Solution
The given compound is hexan-2-ol as shown below.
Figure 2
It contains
The major IR absorptions are observed for

(c)
Interpretation: The major IR absorptions present above
Concept introduction: IR spectroscopy is used to identify the functional group present in a compound. Each and every bond vibrates at a characteristic frequency.
Answer to Problem 13.42P
The major IR absorptions are observed for
Explanation of Solution
The given compound is hept-2-one as shown below.
Figure 3
It contains
The major IR absorptions are observed for

(d)
Interpretation: The major IR absorptions are present above
Concept introduction: IR spectroscopy is used to identify the functional group present in a compound. Each and every bond vibrates at a characteristic frequency.
Answer to Problem 13.42P
The major IR absorptions are observed for
Explanation of Solution
The given compound is benzoic acid as shown below.
Figure 4
It contains,
The major IR absorptions are observed for
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