10. Suppose that in a proton NMR experiment, you fixed the magnetic field and fo

Question

10. Suppose that in a proton NMR experiment, you fixed the magnetic field and found a frequency at which a sample absorbed radiofrequency radiation. If you were then to decrease the applied magnetic field, what would you observe?

A.) The absorption frequency would stay the same, but there would be more splitting of absorption signal.

B.) The absorption frequency would stay the same, but there would be less splitting of absorption signal.

C.) The absorption frequency and splitting both remain unchanged.

D.) The absorption frequency would increase

E.) The absorption frequency would decrease

Explanation / Answer

Ans: E

Applied magnetic field is proportional to the frequency of absorbed electromagnetic radiation.

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