Question

Name the reagent used for the dehydrohalogenation of alkyl halides.

• A. aq. $KOH$
• B. alc. $KOH$
• C. Dry $A{g}_{2}O$
• D. $Zn$

Answer 1

Answer: (B)

alc. $KOH$

1. KOH is the name of the reagent used for dehydrohalogenation of alkyl halides.

2. when we use Alcoholic potassium hydroxide i.e, KOH as a reagent, the negative part of the reagent, that is $O{H}^{-}$ it acts a a base and abstracts the beta Hydrogen from the saturated substrate( alkyl hallide) present and trasforms it to an alkene in the product, thereby undergoing Elimination reaction.