NMR Spectroscopy – Section 1

6. All hydrogen atoms

A. have the same resonance frequency
B. resonate at different frequencies depending on their environment.
C. are attached to carbon
D. resonate at about the same frequency as carbon

Correct Answer: B. resonate at different frequencies depending on their environment.

7. Why is it important to use a deuterated solvent?

A. NMR uses least of this solvent
B. So the spectrometer can lock onto the sample to prevent the spectrum from drifting during acquisition
C. Expensive solvents work best with NMR
D. They dissolve polymer the fastest

Correct Answer: B. So the spectrometer can lock onto the sample to prevent the spectrum from drifting during acquisition

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