Quelpr
3 marksReactions of Carbon Compounds

CSEC Chemistry · January 2018 · Paper 2 · Question 5(a)(ii)

The compound responsible for the odour of apples is ethyl pentanoate, C₄H₉COOC₂H₅.

Draw the FULLY DISPLAYED structure of ethyl pentanoate and circle the functional group.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 5(a)(i)State the homologous series to which ethyl pentanoate belongs.[1 mark]
  2. 5(a)(iii)Write the molecular formulae for the alcohol and carboxylic acid that will react to produce ethyl pentanoate.[2 marks]
  3. 5(a)(iv)Name the catalyst involved in the reaction between the alcohol and carboxylic acid stated in (c)(iii).[1 mark]
  4. 5(a)(v)Explain why an ester has low solubility in water whereas a simple alcohol is very soluble in water.[2 marks]
  5. 5(b)State the reaction condition and reagent used for the alkaline hydrolysis of ethyl ethanoate. Hence, write a balanced chemical equation for this reaction.[4 marks]
  6. 5(c)Commercial soaps are usually manufactured using natural esters. Name the process used to make soap and state ONE source of these natural esters.[2 marks]

More practice: the rest of this paper · more Reactions of Carbon Compounds questions · all CSEC Chemistry past papers