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1 markAcid/Base Equilibria

CAPE Chemistry Unit 1 · 2005 · Paper 1 · Question 9(b)(i)

Plant material is used as a base source for drug development and natural products. Extraction must minimize damage and allow easy collection.

Suggest a method that would be suitable to extract natural organic compounds from plant material.

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Other parts of this question

  1. 9(a)(i)Suggest a type of solvent that could be used to isolate an organic product from an aqueous reaction mixture.[1 mark]
  2. 9(a)(ii)Describe TWO properties the solvent should have for this extraction method to work.[2 marks]
  3. 9(a)(iii)Briefly explain ONE principle on which solvent extraction is based.[2 marks]
  4. 9(b)(ii)Give TWO features of the extraction method suggested in (b)(i) that allow the stated objectives to be achieved.[2 marks]
  5. 9(b)(iii)Explain why the features mentioned in (b)(ii) are essential.[2 marks]

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