Fill in the following table identifying the peaks you labeled in your spectrum.

Question

Fill in the following table identifying the peaks you labeled in your spectrum. Use Table 25.1 of the lab manual to assign the peaks to the functional group vibrations listed. More than one peak (label) may appear for a “vibration” of a functional group (2 pt.)

Functional Group Vibration

Aromatic C-H stretching vibration

Ketone C=O stretching vibration

oop bending vibration on monosubstituted aromatic ring (phenyl)

Functional Group Vibration

Aromatic C-H stretching vibration

Ketone C=O stretching vibration

oop bending vibration on monosubstituted aromatic ring (phenyl)

Explanation / Answer

1)Aromatic CH stretching vibration =3031-3056 cm-1

2)Ketone C=O stretching vibration= 1704 cm-1

3)oop bending vibration of Aromatic CH = 688-722 cm-1

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