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Organic Chemistry

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Alkynes

Question
2 out of 16
 

If bottle A contains cis-2-butene, bottle B contains 1-propyne, and bottle C contains butane, identify the bottle that contains the compound with carbon-carbon bonds of the highest bond energy.

A Bottle A
B Bottle B
C Bottle C
D They all have equal bond dissociation energies
Ans. B

Bottle A – cis-2-Butene

Bottle B – 1-Propyne

Bottle C – Butene

Compare the carbon-carbon bonds that distinguish these compounds. cis-2-Butene is an alkene which has a carbon-carbon double bond. 1-Butyne is an alkyne and has a carbon-carbon triple bond and butane has carbon-carbon single bonds. The triple bonded carbon-carbon bonds have the highest bond dissociation energy. Bottle B contains 1-propyne.

Alkynes Flashcard List

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