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(x x) Q. 10.20. The treatment of alkyl chlorides with aqueous

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$(xx)$ Q. 10.20. The treatment of alkyl chlorides with aqueous $KOH$ leads to the formation of aleohols but in presence of alcoholic $KOH$ , alkenes are the major products. Explain why? (Hr. Board 2011, 2013) Ans. In aqueous solution, $KOH$ is almost completely ionized to give $OH^{-}$ ions which being a strong nucleophile brings about a substitution reaction on alkyl halides to form alcohols. Further in the aqueous solution, $OH^{-}$ ions are highly solvated (hydrated). This solvation reduces the basic character of $OH^{-}$ ions which, therefore, fail to abstract a hydrogen from the $β$ -carbon of the alkyl chloride to

Uploaded: 2022-10-06T18:35:04.000Z
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Updated on: Oct 6, 2022

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Q. 10.20. The treatment of alkyl chlorides with aqueous

KOH

leads to the formation of aleohols but in presence of alcoholic

KOH

, alkenes are the major products. Explain why? (Hr. Board 2011, 2013) Ans. In aqueous solution,

KOH

is almost completely ionized to give

OH^{-}

ions which being a strong nucleophile brings about a substitution reaction on alkyl halides to form alcohols. Further in the aqueous solution,

OH^{-}

ions are highly solvated (hydrated). This solvation reduces the basic character of

OH^{-}

ions which, therefore, fail to abstract a hydrogen from the

β

-carbon of the alkyl chloride to

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Question Text	$(xx)$ Q. 10.20. The treatment of alkyl chlorides with aqueous $KOH$ leads to the formation of aleohols but in presence of alcoholic $KOH$ , alkenes are the major products. Explain why? (Hr. Board 2011, 2013) Ans. In aqueous solution, $KOH$ is almost completely ionized to give $OH^{-}$ ions which being a strong nucleophile brings about a substitution reaction on alkyl halides to form alcohols. Further in the aqueous solution, $OH^{-}$ ions are highly solvated (hydrated). This solvation reduces the basic character of $OH^{-}$ ions which, therefore, fail to abstract a hydrogen from the $β$ -carbon of the alkyl chloride to
Updated On	Oct 6, 2022
Topic	Aldehydes & Ketones
Subject	Chemistry
Class	Class 12
Answer Type	Video solution: 1
Upvotes	145
Avg. Video Duration	21 min

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