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Example Questions
Example Question #1 : Infrared (Ir) Spectroscopy
An IR spectroscopy reading of a compound shows a large absorption at . What is the identity of this compound?
Possible Answers:
Aldehyde
Amide
Alcohol
Amine
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
.
Tom
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Rice University, Bachelors, Biochemistry & Cell Biology and Classical Studies. University of Oxford, PHD, Clinical Medicine.
Shreya
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Arizona State University, Bachelor of Science, Developmental Biology and Embryology.
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