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Bromination of Pentene

Bromine is added to pentane and pentene. In the absence of intense light, only pentene reacts.

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2.6 MB, 41 seconds

File: MOVIES/KJORGANIC/BROMPENT.MOV

Voiceover
Bromine dissolved in carbon tetrachloride is added to pentane and pentene. The pentane does not react with the bromine and the solution stays orange. When bromine is added to pentene, the solution eventually becomes clear. In pentene, bromine adds across the double bond to produce 1,2 -dibromopentane, which is colorless.


Design, Text, and Demonstration:  
  Kristin Johnson University of Wisconsin - Madison, Madison, WI 53706
Video production, editing, and voice:  
  Jerrold J. Jacobsen University of Wisconsin - Madison, Madison, WI 53706
  Greg Minix University of Wisconsin - Madison, College of Engineering, Madison, WI 53706
  Michael Killips University of Wisconsin - Madison, School of Nursing, Madison, WI 53706