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Example Questions
Example Question #11 : Biochemistry, Organic Chemistry, And Other Concepts
An IR spectroscopy reading of a compound shows a large absorption at . What is the identity of this compound?
Possible Answers:
Amine
Alcohol
Amide
Aldehyde
Correct answer:
Alcohol
Explanation:
Compounds with an alcohol group show absorptions in an IR sprectrum from through
. Therefore an absorption of
would correspond to an alcohol. Amide groups show absorptions from
through
. Amine groups show absorptions from
through
,
through
,
through
and
through
(aromatic amines). Carbonyl compounds such as aldehydes show strong absorptions in the IR spectrum at
through
.
Mohamad
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