When 2-bromobutane reacts with alcoholic KOH, the reaction is

Question

When 2-bromobutane reacts with alcoholic KOH, the reaction is (A) hydrogenation (B) halogenation (C) dehydro halogenation (D) none of these

Tardigrade Admin · Accepted Answer

CH3 - underset overset|BrCH - CH2 -CH3 xrightarrow[(-HBr)]alc. KOH underset textButene - 1CH2 = CH - CH2 -CH3 2-bromobutane on reaction with alc. KOH eliminates HBr. Therefore, this reaction is known as dehydrohalogenation.

Q. When 2-bromobutane reacts with alcoholic $K O H,$ the reaction is

hydrogenation

halogenation

dehydro halogenation

none of these

$C H_{3} - B ∣ r C H - C H_{2} - C H_{3} a l c . K O H (- H B r)$
$Butene - 1 C H_{2} = C H - C H_{2} - C H_{3}$
$2$ -bromobutane on reaction with alc. $K O H$ eliminates $H B r$ . Therefore, this reaction is known as dehydrohalogenation.

Q. When 2-bromobutane reacts with alcoholic KOH, the reaction is