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1 markSources of Hydrocarbon Compounds

CSEC Chemistry · January 2015 · Paper 2 · Question 3(b)(i)

Fractional distillation of crude oil produces fractions with varying carbon atom numbers, as shown in Table 3.

Identify ONE of these numbered fractions. Fraction number: Fraction name :

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Other parts of this question

  1. 3(a)State TWO natural sources of hydrocarbons.[2 marks]
  2. 3(b)(ii)State ONE use of Fraction 3.[1 mark]
  3. 3(c)(i)Identify the homologous series to which Compound W belongs.[1 mark]
  4. 3(c)(ii)Write the FULLY DISPLAYED structural formulae of the two molecules that are produced when Compound W is hydrolysed by dilute hydrochloric acid, and state the…[2 marks]
  5. 3(d)(i)State the name of a polymer of glucose, and using THREE glucose units, draw the partial structure of this named polymer in the space provided.[1 mark]
  6. 3(d)(ii)A student is asked to distinguish between a sample of glucose and a sample of its polymer. He adds water to separate portions of glucose and its polymer, and…[2 marks]
  7. 3(e)Name the type of polymer formed and give ONE use of this polymer.[1 mark]

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