So in studying I've run into a problem where I don't understand the explanation for the answer. The NMR shows there are five types of hydrogens, listed below. What I don't get is why Hb has five signals, when the it has 8 neighboring hydrogens. I don't have the name of the molecule, but I will describe as best as I can so you can draw it out.
I have an isopropyl group bonded to an oxygen, which is bonded to a carbon that is double bonded to an oxygen and an ethyl group. This will have the formula of C7H14O2.
The types of hydrogens are:
Ha= 6 hydrogens total, with three found on each methyl of the isopropal, one neighboring hydrogen (Hb)
Hb= 1 hydrogen total, graph shows it has five signals, can't see how though
The Ha corresponds to the two methyl hydrogens on the isopropal, then the rest fall in order from left to right. Any help would be much appreciated, thanks!