Question

When reading a proton NMR spectrum, what information regarding molecular structure can be determined from: 1) the chemical shift, 2) the area under each peak (the integration value), and 3) spin-spin splitting (the n + 1 rule)?

Answer 1

1) chemical shift

it will give you the electron density around the proton

means whether the proton attached to O or N or C or aromatic ring or carbon attached to electron with drawing group

2)

Area or integration

this will give the no of protons attached to particulr atom

3)

Spin Spin splitting

this will give the how amny protons attached to adhectnt ATOM

SUPPOSE

H_a-C-C-H_b here Ha will give doublet according to n+1 rule

where n is no of protons on adjecent carbon.