Quelpr
4 marksStructure and Formulae

CAPE Chemistry Unit 2 · May/June 2021 · Paper 2 · Question 1(a)(ii)

This module covers the chemistry of carbon compounds.

Identify TWO types of structural isomers, giving an example of EACH.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)(i)Define the term 'structural isomerism'.[2 marks]
  2. 1(b)(i)Calculate the molecular formula of the hydrocarbon, P.[3 marks]
  3. 1(b)(ii)Write the displayed structural formula of P.[1 mark]
  4. 1(b)(iii)Outline the reaction mechanism for the reaction of P with liquid bromine, using appropriate notations and equations.[4 marks]
  5. 1(b)(iv)Identify the type of reaction mechanism outlined in (b)(iii) on page 5.[1 mark]
  6. 1(c)(i)Write the displayed structural formula of TWO isomers of Q.[2 marks]
  7. 1(c)(ii)State whether Compound Q exhibits geometric (cis/trans) isomerism.[1 mark]
  8. 1(c)(iii)State TWO reasons for your answer in (c)(ii).[2 marks]
  9. 1(c)(iv)Outline the mechanism for the reaction between Compound Q and HBr, using curved arrows to show the movement of electrons.[4 marks]
  10. 1(c)(v)State the type of reaction mechanism outlined in (c)(iv).[1 mark]
  11. 1(d)(i)Describe the observations expected for EACH of the following reactions: Aqueous bromine is added to liquid pentane (in sunlight).[2 marks]
  12. 1(d)(ii)Describe the observations expected for EACH of the following reactions: Aqueous bromine is added to liquid pentane (without sunlight).[1 mark]
  13. 1(d)(iii)Describe the observations expected for EACH of the following reactions: Cold acidified potassium permanganate solution is added to liquid pentane.[2 marks]

More practice: the rest of this paper · more Structure and Formulae questions · all CAPE Chemistry Unit 2 past papers