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  4. 2-Bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is

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Q. 2-Bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is

AIPMTAIPMT 1998Hydrocarbons

Solution:

Alkyl halides react with alcoholic $KOH$ which favours elimination reaction. Trans-2penetene is more symmetrical when compared to cis-isomers. So major product formed is trans-2-pentene.
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