What two strong absorptions are characteristic of the IR spectrum of carboxylic acids?
A. C=O absorption at 1710 cm -1 and a C-H absorption at 3000 cm -1 .
B. C=O absorption at 1710 cm -1 and an O-H absorption at 2500-3500 cm -1 .
C. C=O absorption at 1600 cm -1 and an O-H absorption at 2500-3000 cm -1 .
D. C-O absorption at 1500 cm -1 and an O-H absorption at 2500-3500 cm -1 .
Solution
B. C=O absorption at 1710 cm-1 and an O-H absorption at 2500-3500 cm-1.
Carboxylic acid have two functional groups in it; OH and C=O
due to hydrogen bonding nature; OH shows broad peak at 2500 - 3500 cm-1
Carbonyl at 1710 cm-1
.
Unit-IV; Professional Sales Representative (PSR).pptx
What two strong absorptions are characteristic of the IR spectrum of c.docx
1. What two strong absorptions are characteristic of the IR spectrum of carboxylic acids?
A. C=O absorption at 1710 cm -1
and a C-H absorption at 3000 cm -1
.
B. C=O absorption at 1710 cm -1
and an O-H absorption at 2500-3500 cm -1
.
C. C=O absorption at 1600 cm -1
and an O-H absorption at 2500-3000 cm -1
.
D. C-O absorption at 1500 cm -1
and an O-H absorption at 2500-3500 cm -1
.
Solution
B. C=O absorption at 1710 cm-1 and an O-H absorption at 2500-3500 cm-1.
Carboxylic acid have two functional groups in it; OH and C=O
due to hydrogen bonding nature; OH shows broad peak at 2500 - 3500 cm-1
Carbonyl at 1710 cm-1
