NMR Spectrum of CH3 CH2 OH: Characterizing 3 Spectral Line Bunches

[athithi]

The NMR spectrum of CH3 CH2 OH consists of 3 bunches of spectral lines. the number of spectral lines in the bunch correspoding to CH2 group is ...?

Answer is 4...how to do this ?...

 

[Borek]

First of all - why do the lines split?

 

[chemisttree]

In this case, http://en.wikipedia.org/wiki/Proton_NMR" regarding spin-spin coupling.

 

[war485]

The NMR spectrum of CH3 CH2 OH consists of 3 bunches of spectral lines. the number of spectral lines in the bunch correspoding to CH2 group is ...?

Answer is 4...how to do this ?...

There's coupling involved, look at the hydrogens connected on the "neighboring carbon". The wikipedia has an explanation for how that works. There's also a n+1 rule that works similarly for this situation.