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2 marksInfrared Spectroscopy

CAPE Chemistry Unit 2 · 2009 · Paper 2 · Question 5(a)(ii)

Principles and methods of IR spectroscopy.

State the TWO categories of molecular vibrations exhibited by molecules.

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Other parts of this question

  1. 5(a)(i)State TWO principles upon which IR spectroscopy is based.[2 marks]
  2. 5(a)(iii)Outline the steps in the preparation of a solid compound for examination in an IR spectrometer.[2 marks]
  3. 5(b)(i)Use the data booklet to identify the bonds represented by peaks A, B, and C in Figure 4.[3 marks]
  4. 5(b)(ii)Suggest the structure of molecule Y.[1 mark]
  5. 5(c)(i)Suggest TWO advantages and ONE disadvantage of using steam for the extraction process illustrated in Figure 5.[3 marks]
  6. 5(c)(ii)Explain what effect the length of the extractor in Figure 5 will have on the distillation process.[2 marks]

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