Welcome to the Quiz!
This quiz contains 8 questions from a mix of 1 subtopics.
Spin-spin coupling occurs between...
hydrogens on the same carbon atom
hydrogens on alternate carbon atoms
all hydrogen atoms in the molecule
hydrogens on neighbouring carbon atoms
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According to the n+1 rule, a triplet peak in a 1H NMR spectrum indicates the presence of how many neighbouring hydrogen atoms?
2
1
3
0
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In the 1H NMR spectrum of chloroethane (CH3CH2Cl), the signal from the CH3 hydrogens will appear as a with an integral area of , while the signal from the CH2 hydrogens will appear as a with an integral area of .
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Why are deuterated solvents used in 1H NMR spectroscopy?
they enhance the signal-to-noise ratio
they produce signals outside the range observed in 1H NMR
they reduce the cost of the analysis
they increase the solubility of the sample
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Which of the following statements about the chemical shift scale in 1H NMR spectroscopy is correct?
it is used to determine the number of hydrogen atoms in each environment
it helps identify the type of hydrogen atom present based on the peak position
it is not affected by the strength of the applied magnetic field
it is measured in parts per billion (ppb)
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In a 1H NMR spectrum, the peak is proportional to the number of hydrogen atoms in that environment.
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In the 1H NMR spectrum of propanone (CH3COCH3), how many peaks are present?
4
1
2
3
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In the 1H NMR spectrum of bromopropane, CH3CH2CH2Br, how many separate peaks are present?
4
1
3
2
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