
Concept explainers
(a)
Interpretation:
The frequency required to cause spin-flipping in an NMR spectrometer if the magnetic field at the proton is
Concept introduction:
Many nuclei and electrons have spin. Due to this, spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an

Answer to Problem 13.1P
The frequency required to cause spin-flipping in an NMR spectrometer if the magnetic field at the proton is
Explanation of Solution
The radio frequency required to cause spin flipping is given by the equation as shown below.
Where,
•
•
•
Substitute the value of
The frequency required to cause spin-flipping in an NMR spectrometer if the magnetic field at the proton is
(b)
Interpretation:
The magnetic field at the proton required to cause spin-flipping in an NMR experiment if frequency imposed on the sample is
Concept introduction:
Many nuclei and electrons have spin. Due to this, spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus.

Answer to Problem 13.1P
The magnetic field at the proton required to cause spin-flipping in an NMR experiment if frequency imposed on the sample is
Explanation of Solution
The radio frequency required to cause spin flipping is given by the equation as shown below.
Where,
•
•
•
The magnetic field is calculated by the rearranged equation is shown below.
Substitute the value of
The magnetic field at the proton required to cause “spin-flipping” in an NMR experiment if frequency imposed on the sample is
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Chapter 13 Solutions
Organic Chemistry
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