Spectroscopic Properties of Aldehydes and Ketone 1) Explain how IR spectra could be used to differentiate the isomers within ea following pairs. O (a) Cyclohexanone and hexanal (b) 3-cyclohexenone and 2-cyclohexenone (c) 2-butanone and 3-buten-2-ol 2) The IR spectrum below represents a compound with molecular formula Indicate the functional group(s) present, with justification, and identify the percent transmittance 100 80 60 40 20 0 2.6 2.8 3 3.5 H-C stretch wavelength, micrometers 5 5.5 7 8 6 stretch 9 10 11 12 13 1 www 3800 3400 3000 2600 2200 2000 1800 1600 1400 1200 1000 wavenumber,cm-¹ CH₂CH₂CH₂CH- 800 3) Deduce the structures of the following compounds. (a) C4H8O: IR 1720, chemical shift. Hz
​