Which of the following compounds would react rapidly with bromine?

  • A Benzene
  • B Hexane
  • C Hexene
  • D Hexanol

The correct answer is C. Hexene

The addition of bromine to most alkenes is so fast that when bromine is added dropwise to a solution of the alkene the red bromine color disappears almost immediately. In fact, this discharge of color is a useful qualitative test for alkenes.

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