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Question

C3H6,C4H8 and C5H10 belong to the same homologous series.
Arrange these hydrocarbons in order of increasing boiling points.

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Solution

  • The boiling point of the hydrocarbons increases with the increasing molecular mass.
  • As molecular mass increases the intermolecular force of attractions (Van der Waal's force and London force) increases that require a higher amount of energy to break the bond.
  • Therefore, the correct order is C3H6<C4H8<C5H10

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