3. Using any IR correlation table, place a check mark () in the box for all func

Question

3. Using any IR correlation table, place a check mark () in the box for all functional groups that can be positively deduced by the presence of IR absorptions. Also, place a X mark in the box for all functional groups that can be positively eliminated by the absence of IR absorptions. If a functional group cannot be positively identified or eliminated by absorptions in this spectra, leave the box blank. 0.8 0.6 0.2F 1000 3000 2000 Wavenumber (cm-1) alkenes alkynes alcohols alkanes arenes ketone aldehyde anhydride nitrile amine amide carboxylic acid ester acid halides ethers nitro 4. Infrared spectroscopy can be used to distinguish between the three compounds (a-c) shown below. List under each compound the IR absorptions that are unique for that compound? NEC-CH2CH2-C-OH

Explanation / Answer

ANSWER TO 3

ALKANE YES

ALKENE YES

ALKYNE NO

ALCOHOL YES

ARENES YES

AMINE YES

AMIDE YES

ALDEHYDE YES

KETONE YES

CARBOXYLIC ACID YES

ESTER YES

ANHYDRIDE YES

NITRO

ACID HALIDES YES

ETHERS YES

NITRILE NO

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