IR Question

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Deepa100

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When malic acid

Malic_acid2.png

is converted to oxaloacetic acid



what will be the change in the IR spectrum of the solution?
A) A peak will disappear from 1050-1300 cm-1 because malic acid loses alcohol functionality to become oxaloacetic acid.
B) A peak will form at 1690-1760 cm-1 because a C=O double bond is formed during the conversion from malic acid to oxaloacetic acid.
C) A peak will disappear from 2850-2970 cm-1 because the C-H bond in malic acid is converted to a C=O bond in oxaloacetic acid.
D) A peak will disappear from 3590-3650 cm-1 because malic acid loses alcohol functionality to become oxaloacetic acid.

Answer is D. Why not C?

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