Chemistry 5070 · O Level · Formulae, functional groups and terminology

Formulae, functional groups and terminology — practice question

Molecules 1-4 are straight-chain hydrocarbons. 1 $\text{C}_{10}\text{H}_{22}$ 2 $\text{C}_{10}\text{H}_{20}$ 3 $\text{C}_{9}\text{H}_{20}$ 4 $\text{C}_{8}\text{H}_{16}$ Which row correctly classifies these hydrocarbons as alkanes or alkenes?

  • Aalkane: 1 and 2; alkene: 3 and 4
  • Balkane: 1 and 3; alkene: 2 and 4
  • Calkane: 1 and 4; alkene: 2 and 3
  • Dalkane: 2 and 3; alkene: 1 and 4

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