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4 marksFunctional Group Analysis, Reactions and Mechanisms

CAPE Chemistry Unit 2 · May/June 2026 · Paper 2 · Question 1(e)(iii)

A student was given ethyl ethanoate to carry out acid hydrolysis and alkaline hydrolysis of the compound.

Write balanced chemical equations for EACH of the following. Acid hydrolysis of ethyl ethanoate. Alkaline hydrolysis of ethyl ethanoate.

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Other parts of this question

  1. 1(a)(i)Describe the term 'homologous series'.[2 marks]
  2. 1(a)(ii)State the name of a homologous series which only contains aliphatic hydrocarbons.[1 mark]
  3. 1(a)(iii)Draw the displayed structural formula of a three-carbon compound of the named homologous series in (a) (ii).[1 mark]
  4. 1(a)(iv)Write the IUPAC name of the displayed structural formula in (a) (iii).[1 mark]
  5. 1(b)(i)Distinguish between empirical formula and molecular formula.[2 marks]
  6. 1(b)(ii)Calculate the empirical formula of Compound A.[4 marks]
  7. 1(b)(iii)If the molecular mass of Compound A is 46 a.m.u, what is the molecular formula?[1 mark]
  8. 1(c)(i)State the name of the reagent C.[1 mark]
  9. 1(c)(ii)State the name of the primary amine, B.[1 mark]
  10. 1(c)(iii)Draw the displayed structural formula of primary amine, B.[1 mark]
  11. 1(c)(iv)State the characteristic physical property of primary amine, B which can be observed.[1 mark]
  12. 1(c)(v)State the colour changes which would be observed if litmus is added to a solution of primary amine, B.[2 marks]
  13. 1(d)Using pKa values of 16, 4.8 and 0.6, complete Table 1 with the correct pKa value for EACH organic compound.[3 marks]
  14. 1(e)(i)State the characteristic physical property of the ethyl ethanoate.[1 mark]
  15. 1(e)(ii)State TWO differences between acid hydrolysis and alkaline hydrolysis of ethyl ethanoate.[2 marks]
  16. 1(e)(iv)Outline how biodiesel (for diesel engines) is made by the process of transesterification.[2 marks]

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