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The empirical formula of a hydrocarbon is C2H3. The hydrocarbon has a relative molecular Mass of 54. (H = 1, C = 12)

  1. Determine the molecular formula of the hydrocarbon. 
  2. Draw the structural formulae of the hydrocarbon in (1) 
  3. To which homologous series does the hydrocarbon in (2) above belong?

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  1. Determine the molecular formula of the hydrocarbon. 
    • (C2H3)x =54 
      x[12x2 + 3x1] =54
      24x+3x=54
      24x=54
      x = 54/27
      x=2
      (C2H3)2 =C4H6 
  2. Draw the structural formulae of the hydrocarbon in (1)

    • Chemf4et1p1qa16b
  3. To which homologous series does the hydrocarbon in (2) above belong? 
  4. Alkynes
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