MCAT Organic Chemistry Review 2018-2019

consider shifts, the main ones for Test Day are:

MCAT Concept Check 11.3:

Before you move on, assess your understanding of the material with these questions.

Alkyl   groups: 0   to  3   ppm

Alkynes:    2   to  3   ppm

Alkenes:    4.6 to  6   ppm

Aromatics:  6   to  8.5 ppm

Aldehydes:  9   to  10  ppm

Carboxylic  acids:  10.5    to  12  ppm

What    does    nuclear magnetic    resonance   (NMR)   spectroscopy    measure?    What    is  NMR

spectroscopy    generally   used    for?

What    are the units   for chemical    shift   on  a   standardized    NMR spectrum?

What    does    it  mean    for a   proton  to  be  deshielded? How does    this    affect  its peak    in  NMR

spectroscopy?