The alkene that will give the same product with HBr in the absence as well as in the presence of peroxide is

Question

The alkene that will give the same product with HBr in the absence as well as in the presence of peroxide is (A) 2-butene (B) 1-butene (C) propene (D) 1-hexene

Tardigrade Admin · Accepted Answer

The addition of HBr to symmetrical alkenes is not affected by the presence or absence of peroxide. underset2-butene mathopCH3-CH=CH-CH3 xrightarrow[]HBr/peroxide underset2-bromobutane mathopCH3CH2 underset beginsmallmatrix | Br endsmallmatrix mathopCH CH3

Q. The alkene that will give the same product with $H B r$ in the absence as well as in the presence of peroxide is

$2$ -butene

$1$ -butene

propene

$1$ -hexene

$2$ -methylpropene

The addition of $H B r$ to symmetrical alkenes is not affected by the presence or absence of peroxide.
$2 - b u t e n e C H_{3} - C H = C H - C H_{3} H B r / p ero x i d e$ $2 - b ro m o b u t an e C H_{3} C H_{2} ∣ B r C H C H_{3}$

Q. The alkene that will give the same product with HBr in the absence as well as in the presence of peroxide is

2-butene

1-butene