Question 1
The three isomers of dimethylbenzene are commonly named
o-xylene,
m-xylene,
p-xylene. These three isomers can be readily identified using
13C NMR. How many signals would be expected in the proton-decoupled
3C NMR spectra of
o-xylene?
◦ 1 peak
◦ 2 peaks
◦ 3 peaks
◦ 4 peaks
◦ 5 peaks
Question 2
Which of the reagents shown could be used as the basis for a simple chemical test that would distinguish between ethylbenzene and styrene?
◦ Br
2/CCl
4◦ HCl/H
2O
◦ NaBH
4/CH
3OH
◦ NaI/acetone
◦ NaOH/H
2O