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About CCA!
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| Addition of Iodine to Alpha-Pinene (Version 2) |
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Voiceover
Iodine crystals are poured into a large cylinder. Like most
alkenes, cyclohexene reacts only sluggishly with iodine. But when
a-pinene
is poured into iodine, the exothermic reaction vaporizes iodine.
The extra energy comes from relief of ring strain in the
a-pinene
molecules.
Discussion
Mixing solid iodine and cyclohexene shows little reaction but
mixing iodine and a-pinene
produces a very vigorous exothermic reaction and sublimation of
solid iodine to dense iodine vapor.
There are several common pronunciations of the word 'iodine'.
Variations of this movie and the "Historical Note" movie are provided with variations in pronunciation via these links:
Addition of Iodine to a-Pinene
Historical Note
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Design and Demonstration:
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George Gilbert
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Denison University, Granville, OH 43023
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Video:
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Jerrold J. Jacobsen
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University of Wisconsin - Madison, Madison, WI 53706
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Text:
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George Gilbert
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Denison University, Granville, OH 43023
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Kelly Houston Jetzer
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University of Wisconsin - Madison, Madison, WI 53706
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David Phillips
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Wabash College, Crawfordsville, IN 47933
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Frank W. Darrow
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Ithaca College, Ithaca, NY 14850
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