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4 marksStructure and Formulae

CAPE Chemistry Unit 2 · May/June 2025 · Paper 2 · Question 1(a)(iv)

Compound A and Compound B are two possible isomers of C7H16, with their displayed structures shown in Figure 1.

Describe TWO types of structural isomerism other than the one given in (a)(iii). Draw examples of displayed structures of EACH type.

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Other parts of this question

  1. 1(a)(i)Name EACH of the following compounds in Figure 1. Compound A, Compound B.[2 marks]
  2. 1(a)(ii)Define the term 'structural isomerism'.[2 marks]
  3. 1(a)(iii)State the type of structural isomerism present in Compound A.[1 mark]
  4. 1(b)(i)Complete Table 1 by inserting the appropriate observations and inferences in the spaces provided.[5 marks]
  5. 1(b)(ii)Based on the observations and inferences, (i) to (iv) in Table 1, predict the functional groups for Product R and Product S.[2 marks]
  6. 1(b)(iii)Draw the DISPLAYED structure of either Product R or Product S which is formed from the oxidation of the hydrocarbon.[1 mark]
  7. 1(b)(iv)Name and draw the displayed structure of the hydrocarbon C5H10 that was oxidized.[2 marks]
  8. 1(c)(i)Deduce the monomer used to form the polymer in Figure 2.[1 mark]
  9. 1(c)(ii)Using the diagram in Figure 2 and your response from (c)(i), explain how addition polymers are formed.[2 marks]
  10. 1(c)(iii)Identify the reagent(s) used and describe the colour changes expected in order to distinguish the polymer from the monomer.[3 marks]
  11. 1(c)(iv)State TWO characteristics of condensation polymers.[2 marks]
  12. 1(c)(v)Condensation polymers may be classified based on the type of linkage present. List THREE examples of condensation polymers.[3 marks]

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