In which of the following can peroxide effect operate?

Question

In which of the following can peroxide effect operate? (A) CH3CH2CH=CH2+HCl (B) CH3CH2CH=CH2+HBr (C) CH3CH=CH⋅ CH3+HBr (D) CH3CH2CH=CH2+HI

Tardigrade Admin · Accepted Answer

When HBr reacts with unsymmetrical alkene, peroxide effect (.ie, addition of HBr opposite to the Markownikoffs rule) can operate, since it is only HBr for that both the propagation steps (the steps involved during the reaction) are exothermic. CH3CH2CH =CH2 + oversetδ+δ-H Br xrightarrow textPeroxide CH3CH2CH2CH2Br

Q. In which of the following can peroxide effect operate?

$C H_{3} C H_{2} C H = C H_{2} + H Cl$

$C H_{3} C H_{2} C H = C H_{2} + H B r$

$C H_{3} C H = C H \cdot C H_{3} + H B r$

$C H_{3} C H_{2} C H = C H_{2} + H I$

Q. In which of the following can peroxide effect operate?

CH3​CH2​CH=CH2​+HCl

CH3​CH2​CH=CH2​+HBr

CH3​CH=CH⋅CH3​+HBr

CH3​CH2​CH=CH2​+HI

$C H_{3} C H_{2} C H = C H_{2} + H Cl$

$C H_{3} C H_{2} C H = C H_{2} + H B r$

$C H_{3} C H = C H \cdot C H_{3} + H B r$

$C H_{3} C H_{2} C H = C H_{2} + H I$