¹³C NMR (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why is NMR simpler to interpret than NMR?
Why is NMR simpler to interpret than NMR?
Low abundance of nuclei
What does each peak on a NMR spectrum represent?
What does each peak on a NMR spectrum represent?
A unique carbon environment
How many carbon environments are in ethanol ()?
How many carbon environments are in ethanol ()?
2
How do electronegative atoms affect carbon chemical shifts?
How do electronegative atoms affect carbon chemical shifts?
Shift downfield (increase ppm)
Why is - spin-spin splitting extremely rare?
Why is - spin-spin splitting extremely rare?
is only 1.1% abundant
What does decoupling do in NMR spectroscopy?
What does decoupling do in NMR spectroscopy?
Removes - coupling
What is the chemical shift range for NMR?
What is the chemical shift range for NMR?
0 to 220 ppm
What chemical shift indicates a ketone or aldehyde carbon (R-CO-)?
What chemical shift indicates a ketone or aldehyde carbon (R-CO-)?
≈ 210 ppm
What chemical shift range indicates a benzene ring?
What chemical shift range indicates a benzene ring?
125-140 ppm
How many peaks does 1,3-dichlorobenzene show in NMR?
How many peaks does 1,3-dichlorobenzene show in NMR?
4 peaks