Jul 2, 2009
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Pre-Medical
For IR, I think it's good to know carbonyl, alcohol, aliphatic, N-H, and aromatics.

For NMR, I did get an NMR question and you need to have a pretty good idea about H' NMR, how splitting works and what generally is more or less downfield. This can be daunting, and it's most likely not going to be on your MCAT, but if you want to be fully prepared, I'd get some practice solving NMR problems.
 

Simplify

10+ Year Member
Jun 18, 2008
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Pre-Medical
You should at least know the basics for proton NMR: 1 signal for each group of equivalent hydrogens, splitting due to neighboring hydrogens and the ratios you can derive from the intensity of the peaks.

For IR I'd suggest at the very least knowing the signal for C=O, -OH, -N(H)x and aliphatic versus aromatic hydrogen.