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Nuclear magnetic resonance spectroscopy (A-level only)

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Question 3

This question is about organic isomers and spectroscopy.

1.

Give a reagent and observations for a test-tube reaction to distinguish between propan-1-ol and propanone.

[3]
2.

Compounds A\text{A}A and B\text{B}B both have the molecular formula C4H9Cl\text{C}_4\text{H}_9\text{Cl}C4​H9​Cl.

  • A\text{A}A has two doublets and a multiplet in its 1H^1\text{H}1H NMR spectrum.
  • B\text{B}B has only one singlet in its 1H^1\text{H}1H NMR spectrum.

Identify the IUPAC name or draw the structural formula for each of A\text{A}A and B\text{B}B.

[2]
3.

Compounds C\text{C}C and D\text{D}D both have the molecular formula C6H4Cl2\text{C}_6\text{H}_4\text{Cl}_2C6​H4​Cl2​.

  • C\text{C}C has two peaks in its 13C^{13}\text{C}13C NMR spectrum.
  • D\text{D}D has four peaks in its 13C^{13}\text{C}13C NMR spectrum.

Identify the IUPAC name or draw the structural formula for each of C\text{C}C and D\text{D}D.

[2]

Nuclear magnetic resonance spectroscopy (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Nuclear magnetic resonance spectroscopy (A-level only)