Quelpr
4 marksMole Concept

CSEC Chemistry · May/June 2007 · Paper 2 · Question 4(a)

X and Y are two hydrocarbons. When X is completely burnt in air, 0.50 moles of X produce 60 dm³ of CO₂ and 3 moles of water at r.t.p. (1 mole of gas at r.t.p. has a volume of 24 dm³.)

Deduce the molecular formula of X.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 4(b)(i)Based on your answer in 4 (a) on page 9, deduce the homologous series to which X belongs.[1 mark]
  2. 4(b)(ii)Write the name of Compound X.[1 mark]
  3. 4(b)(iii)Draw the fully displayed structure of X.[1 mark]
  4. 4(c)(i)To what homologous series does Y belong?[1 mark]
  5. 4(c)(ii)Write the name of Compound Y.[1 mark]
  6. 4(c)(iii)Draw the fully displayed structure of Y.[2 marks]
  7. 4(d)What chemical test may be used to distinguish between Compounds X and Y? Reagent: Observation:[2 marks]
  8. 4(e)What reagent and reaction conditions are necessary to convert Y to X? Reagent: Conditions:[2 marks]

More practice: the rest of this paper · more Mole Concept questions · all CSEC Chemistry past papers