Four infrared spectra are shown, corresponding to four of the following compounds. For each spectrum, determine the structure and explain how the peaks in the spectrum correspond to the structure you have chosen.

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CH CH2OH он снз_1 CH3CC CH3 CH3 wavelength (um) 2.5 100 3.54 4.5 5 5.5 678 9 10 1 12 13 14 15 16 fa) 4000 3500 3000 2500 2000 1800 1600 1400 1200 1000 wavenumber (cm) wavelength (um) 2.5 100 10 1 12 13 4 15 16 80 20 0 3500 3000 2500 2000 1800 1600 1400 1200 1000 800 600 wavenumber (em) wavelength (m) 5 5.5 6 3.5 2.5 100 4 4.5 7 8 9 10 12 13 14 15 16 80 60111 0 4000 3500 3000 2000 1800 600 1400 1200 1000 800 600 wavenumber (cm-1)