Question

pom go.. . .. . ..... 18.00

The NMR spectra shows the following unknown. It is either Toluene, m-cresol, Benzyl bromide, Ethanal, 2-methyl-1propanol, or 2-hexanone.
Show work and label the appropriate peak and discuss the peaks in text.
*Please explain how to do this*

Answer 1

The above NMR given is question totally matches with ethanal . In above NMR there are two types of peaks means only two types of protons are there. In ethanal there are also 2 types of protons one is methyl three protons and another one is aldehyde proton.Methyl protons will show signal at 1.5 ppm as doublet because of neighbouring one proton and the aldehydic proton will show quartet at 9.5 ppm. So the structure will be Ethanal.