The functional groups in an organic compound can frequently be deduced from its
ID: 981215 • Letter: T
Question
The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A compound, C_5H_18O_2 exhibits strong, broad absorption across the 2500-3200 cm^1 region and an intense absorption at 1715 cm'^-1. Relative absorption intensity: (s)=strong, (m)-medium, (w) weak. What functional class(cs) docs the compound belong to List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly. Do not over-interpret exact absorption band positions. None of your inferences should depend on small differences like 10 to 20 cm^1. The functional class(es) of thla compound is(are) alkane (List only if no other functional class applies.) alkene terminal alkyne internal alkyne arene alcohol ether amine aldehyde or ketone carboxylic acid ester nitrileExplanation / Answer
J. Carboxylic acid functional group is present
Strong and broad absorption across 2500 to 3200 cm-1 indicates -OH group of acid and
intense absorption at 1715 cm-1 indicates -CO- group of carboxylic acid
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