NMR Spectroscopy (HSC SSCE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which property must atomic nuclei have to be studied using NMR spectroscopy?
Which property must atomic nuclei have to be studied using NMR spectroscopy?
An odd number of nucleons
Why is TMS used as the reference standard in NMR spectroscopy?
Why is TMS used as the reference standard in NMR spectroscopy?
It is the most shielded compound
In which direction do nuclei align in the lower energy state?
In which direction do nuclei align in the lower energy state?
With the magnetic field direction
What makes the chemical shift scale independent of the spectrometer used?
What makes the chemical shift scale independent of the spectrometer used?
It is measured as a ratio in ppm
Why are deuterated solvents used in NMR spectroscopy?
Why are deuterated solvents used in NMR spectroscopy?
Deuterium has even nucleons, invisible to NMR
What does the number of peaks in a low-resolution H NMR spectrum indicate?
What does the number of peaks in a low-resolution H NMR spectrum indicate?
Number of different H environments
How many peaks would a CH₂ group show if it has 3 neighbouring H atoms?
How many peaks would a CH₂ group show if it has 3 neighbouring H atoms?
Four peaks (quartet)
How do OH group protons behave in high-resolution H NMR?
How do OH group protons behave in high-resolution H NMR?
Always appear as singlet, don't split
Which statement is true about C NMR compared to H NMR?
Which statement is true about C NMR compared to H NMR?
No splitting occurs in standard C NMR
What is the typical chemical shift range for aldehyde protons R-C(O)H in H NMR?
What is the typical chemical shift range for aldehyde protons R-C(O)H in H NMR?
9-10 ppm