Which of the following is a free radical substitution reaction ?

Question

Which of the following is a free radical substitution reaction ? (A) Benzene with Br2 /AlCl3 (B) Acetylene with HBr (C) Methane with Br2/hv (D) Propene with HBr/(C6H5COO)2

Tardigrade Admin · Accepted Answer

HC≡ CH ->[HBr] underset text(Electrophilic addition)CH2=CH-Br CH4+Br2 ->[hv] underset text(Free radical substitution)CH3-Br+HBr CH3-CH=CH2+HBr ->[(C6H5COO)2]

Q. Which of the following is a free radical substitution reaction ?

Benzene with $B r_{2} / A lC l_{3}$

Acetylene with $H B r$

Methane with $B r_{2} / h v$

Propene with $H B r / (C_{6} H_{5} COO)_{2}$

$H C \equiv C H HBr (Electrophilic addition) C H_{2} = C H - B r$
$C H_{4} + B r_{2} hv (Free radical substitution) C H_{3} - B r + H B r$
$C H_{3} - C H = C H_{2} + H B r (C X_{6} H X_{5} COO) X_{2}$

Q. Which of the following is a free radical substitution reaction ?

Benzene with Br2​/AlCl3​

Acetylene with HBr

Methane with Br2​/hv

Propene with HBr/(C6​H5​COO)2​

HC≡CHHBr​(Electrophilic addition)CH2​=CH−Br​ CH4​+Br2​hv​(Free radical substitution)CH3​−Br+HBr​ CH3​−CH=CH2​+HBr(CX6​HX5​COO)X2​​

Benzene with $B r_{2} / A lC l_{3}$

Acetylene with $H B r$

Methane with $B r_{2} / h v$

Propene with $H B r / (C_{6} H_{5} COO)_{2}$

$H C \equiv C H HBr (Electrophilic addition) C H_{2} = C H - B r$
$C H_{4} + B r_{2} hv (Free radical substitution) C H_{3} - B r + H B r$
$C H_{3} - C H = C H_{2} + H B r (C X_{6} H X_{5} COO) X_{2}$