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Question: Answered & Verified by Expert
Assertion : 2-bromobutane on reaction with sodium ethoxide in ethanol gives 1-butene as a major product.
Reason : 1-butene is more stable than 2-butene.
ChemistryHydrocarbonsAIIMSAIIMS 2004
Options:
  • A If both assertion and reason are true and reason is the correct explanation of assertion
  • B If both assertion and reason are true but reason is not the correct explanation of assertion
  • C If assertion is true but reason is false
  • D If both assertion and reason are false.
Solution:
1328 Upvotes Verified Answer
The correct answer is: If both assertion and reason are false.
2-bromobutane on reaction with sodium ethoxide in ethanol gives 2-butene as a major product.


This is according to Saytzeff's rule i.e. the predominant product is the most substituted alkene.
2-butene is more stable than 1-butene due to presence of large number of hyperconjugating structures in 2-butene.

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