Problem: The vibration of which bond gives an IR absorption that distinguishes between the following two compounds? CH3CH2CH2OH CH3CH2OCH3a)  C—Ob) O—Hc) C—Cd) C—HWhat is the approximate wavenumber (cm-1) of that band?  a) 1050 b) 1250 c) 1450 d) 1700 e) 3500

FREE Expert Solution

We are asked which bond gives an IR absorption that distinguishes between the following two compounds and the approximate wavenumber (cm-1) of that band.


CH3CH2CH2OH 

CH3CH2OCH3


The absorption frequencies in the functional group region:


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Problem Details

The vibration of which bond gives an IR absorption that distinguishes between the following two compounds? 

CH3CH2CH2OH 

CH3CH2OCH3

a)  C—O

b) O—H

c) C—C

d) C—H

What is the approximate wavenumber (cm-1) of that band?  

a) 1050 

b) 1250 

c) 1450 

d) 1700 

e) 3500

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Infrared Spectroscopy Table concept. You can view video lessons to learn Infrared Spectroscopy Table. Or if you need more Infrared Spectroscopy Table practice, you can also practice Infrared Spectroscopy Table practice problems.