NMR lab Flashcards
1
Q
When is it necessary to use an internal standard in a chemical analysis
A
internal standards are used to ensure that the is no sample loss in the prepration step before analysis.
2
Q
Why are deuterated solvents for D2), used in NMR.
A
because they have a different chemical compostion than hydeogen, so it will not give off any background signals that will interfere with the sample
3
Q
The enegery reqeruied to flip the spin of a proton in NMR is in the infrared region of the electromagnetic spectrum True or flase
A
True, it occurs in the radio wave regieon
