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3 marksAcid/Base Equilibria

CAPE Chemistry Unit 1 · 2005 · Paper 1 · Question 8(b)(i)

An organic compound of formula C₉H₁₀O gives NMR signals: 7.5 (5H), 3.0 (2H), 1.2 (3H).

Which TWO functional groupings are indicated by the chemical shift values? Explain your reasoning.

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Other parts of this question

  1. 8(a)(i)Describe the property of the nuclei that allows them to be detected in NMR analysis.[1 mark]
  2. 8(a)(ii)Give the symbols for the TWO main nuclei found in organic molecules that are detected by NMR analysis.[1 mark]
  3. 8(a)(iii)State the changes that occur in the molecules of a sample when subjected first to an external magnetic field and then to radio wave signals.[2 marks]
  4. 8(b)(ii)Suggest a structure for the organic compound C₉H₁₀O.[3 marks]

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