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Chemistry · May / June 2023 · Paper 12 · Question 35

5070Alkanes

Which statement about ethane is correct?

  1. AEach ethane molecule contains exactly seven bonds, all of which are single covalent bonds.
  2. BEthane is a member of the homologous series of alkanes, a family of unsaturated hydrocarbons.
  3. CThe equation for the complete combustion of ethane is C2H6 + 3O2 → 2CO2 + 3H2O.
  4. DWhen a molecule of ethane reacts with chlorine, one hydrogen atom is replaced by a chlorine molecule.

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Correct answer: A. Each ethane molecule contains exactly seven bonds, all of which are single covalent bonds.

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