Chemistry Questions and Answers February 29, 2020

Which molecule exhibits stronger attraction forces with silica gel (-Si-OH) : A) CH3COOH B) C2H5Cl C) CH3(CH2)4CH3

Consider the spectra below of an unknown compound.

100 80 60 21 abundance 1.2 abundance 40 86 20 0.0 15 30 45 60 75 90 mz Rel. Intensity ,INFRARED SPECTRUM 0.8 0.6 0.4 0.2 3000 2000 1000 Wavenumber (cm1) Relative Transmittance ,3

Determine the structure for the molecule that most likely produced these spectra.

Calculate the index of hydrogen deficiency (degrees of unsaturation) for the following molecular formula, and propose a structure for this compound consistent with the following MS, 1 H NMR, and 13 C NMR. MS: 1 H NMR : (The numbers at the top are the integration values.) 13 C NMR: