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6 marksThe Mole Concept

CAPE Chemistry Unit 1 · 2005 · Paper 2 · Question 7(c)(i)

Combustion analysis of 1.0 g of isomeric compounds A and B yields 2.3 g CO2 and 0.93 g H2O. The relative molecular mass is 58.

Calculate the empirical and molecular formulae of compounds A and B.

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Other parts of this question

  1. 7(e)(i)Draw the displayed structure of the repeating unit of nylon 6,6.[3 marks]
  2. 7(e)(ii)Identify the common structural feature present in both proteins and nylon 6,6.[1 mark]
  3. 7(a)(i)Explain the term stereoisomerism.[1 mark]
  4. 7(a)(ii)Explain the term structural isomerism.[1 mark]
  5. 7(b)(i)Classify each given pair of structures (a, b, and c) as structural isomers, geometric isomers, or the same compound, providing reasons.[6 marks]
  6. 7(b)(ii)Provide the systematic IUPAC names for each isomer shown in (b)(i) parts a) and b).[3 marks]
  7. 7(c)(ii)Deduce the structural formulae of the two isomers A and B.[2 marks]
  8. 7(c)(iii)State the specific type of isomerism displayed by A and B.[1 mark]

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