Quelpr
4 marksReactions of Carbon Compounds

CSEC Chemistry · May/June 2011 · Paper 2 · Question 3(b)

Soaps are formed from the alkaline hydrolysis (saponification) of natural fats and oils, which are esters. Ethyl propanoate, an ester, is hydrolysed by aqueous sodium hydroxide. The reaction is shown with products A and B.

Draw FULLY displayed structures of the hydrolysis products, A and B.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 3(a)(i)Define 'anaerobic fermentation'.[2 marks]
  2. 3(a)(ii)Give ONE reason why high temperatures are NOT suitable for anaerobic fermentation.[1 mark]
  3. 3(c)Name ONE by-product of the saponification of fats and oils, and state ONE disadvantage of synthetic cleaning agents over soaps.[2 marks]
  4. 3(d)(i)Draw the structure of the polymer formed from propene. Use THREE units of the monomer to demonstrate your answer.[2 marks]
  5. 3(d)(ii)What type of polymerisation would the 3-amino propanoic acid undergo? State the general name for the type of polymer formed from 3-amino propanoic acid.[1 mark]
  6. 3(d)(iii)Outline a chemical test that can be used to distinguish between propene and its polymer.[2 marks]

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