Deduce a possible structure for the compound with the IR absorptions below. (a) C5H8O:  2950, 1750 cm-1 (b) C4H8O:  2950, 2820, 2715, 1715 cm-1

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1. Deduce a possible structure for the compound with the IR absorptions below.

(a) C5H8O:  2950, 1750 cm-1

(b) C4H8O:  2950, 2820, 2715, 1715 cm-1

2. How could IR spectroscopy be used to distinguish between the following pair of compounds?

(a) CH2=CHCH2CH(CH3)2 and CH3CH2CH2CH(CH3)2

(b) CH3OCH2CH3 and CH3CH2CH2OH

 

4. How does the O-H stretch in the IR spectrum of a carboxylic acid differ from the O-H stretch of an alcohol?

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