Question & Answer: Analyst Date student July-25-17 1:04 PM 92 90 80 70- 60 33374 25722 2030 3 40 30- 20 3052…..

Help analyze this IR spec. This is of an unknown benzene molecule we are to identify. Just help label the peaks.
Analyst Date student July-25-17 1:04 PM 92 90 80 70- 60 33374 25722 2030 3 40 30- 20 3052 2641 28447 3000 2500 2000 1500 1000 Sample 1448 By student Date Thursday, July 20 2017 3061 10- -0 4000 1687.5 3500 cm-1 student 1448

Analyst Date student July-25-17 1:04 PM 92 90 80 70- 60 33374 25722 2030 3 40 30- 20 3052 2641 28447 3000 2500 2000 1500 1000 Sample 1448 By student Date Thursday, July 20 2017 3061 10- -0 4000 1687.5 3500 cm-1 student 1448

Expert Answer

Answer

Peak at 3337 is due to O-H stretch ; 3061 is because of aromatic =C-H stretch ;peak at 2964 corresponds to sp3 C-H;and 1687 is due to carbonyl group of carboxylic acid ;1610 corresponds to aromatic C=C stretch and 1020 is due to C-O stretch.

So compound has benzene ring and COOH group.

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