Using a 60 MHZ spectrometer, the protons in dichloromethane appear at 9.8 ppm. When the same sample is placed in 100 MHZ instrument, where does the signal appear?
The answer is 9.8 ppm.
This is because, the chemical shift scale in ppm (parts per million) scale is independent of the instrument frequency. Hence the ppm value for a particular proton remains constant irrespective of the frequency.
Using a 60 MHZ spectrometer, the protons in dichloromethane appear at 9.8 ppm. When the same...