The IR spectra shown next may include a carboxylic acid, an ester, an amide, a nitrile, an acid chloride, or an acid anhydride. Determine the functional group suggested by each spectrum, and list the specific frequencies you used to make your decision.

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wavelength (um) 5 5.5 6 35 4 4 4.5 78 910112 13 14 15 16 100 4000 3500 3000 2500 2000 1800 1600 1400 1200 1000 wavenumber (cm-1) wavelength (um) 5 5.5 6 2.5 100 4 4.5 7 8 9 10 12 13 14 15 16 3500 2000 1800 1600 1400 1200 1000 800 600 wavenumber (cm) wavelength (um) 5 5.5 6 7 8 9 10 11 12 13 14 15 16 4 4.5 100 4000 3500 3000 2000 1800 1600 1400 1200 1000 800 wavenumber (cm