A former theological student, Heavn Hardley, has turned to chemistry and, during his eighth year of graduate study, has carried out the following reaction:

Unfortunately, Hardley thinks he may have mislabeled his samples of A and 5, but has wisely decided to take an IR spectrum of each sample. The spectra are reproduced in Fig. P12.27 on p. 574. Which sample goes with which spectrum? How do you know?
Fig. P12.27

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Hz,catalyst wavelength, micrometers 2.6 2.8 3 3.5 4 4.55 5.5 6789 10 12 13 14 1516 100 E 80 60 C 40 20 (spectrum 1) 3800 3400 3000 2600 2200 2000 1800 1600 1400 1200 1000 800 600 wavenumber, cm1 wavelength, micrometers 2.6 2.8 3 3.5 4.5 55.5 6 78 9 10 12 13 14 1516 100 80 E 60 ะ 40 o 20 0 (spectrum 2) 3800 3400 3000 2600 2200 2000 1800 1600 1400 1200 1000 800 600 wavenumber, cm