A) electrophilic addition reaction
B) nucleophilic addition reaction
C) free radical addition reaction
D) the formation of carbocation as an intermediate
Correct Answer: C
Solution :
Addition of HBr to an alkene in the presence of peroxide is the example of free radical addition reaction. \[R-O-O-R\xrightarrow{{}}2R-{{O}^{\bullet }}\] \[R-{{O}^{\bullet }}+HBr\xrightarrow{{}}R-OH+B{{r}^{\bullet }}\] \[R-CH=C{{H}_{2}}+B{{r}^{\bullet }}\xrightarrow{{}}R-\overset{\bullet }{\mathop{CH}}\,-C{{H}_{2}}Br\] \[R-\overset{\bullet }{\mathop{CH}}\,-C{{H}_{2}}Br\xrightarrow{HBr}RC{{H}_{2}}C{{H}_{2}}Br+B{{r}^{\bullet }}\] \[B{{r}^{\bullet }}+B{{r}^{\bullet }}\xrightarrow{{}}B{{r}_{2}}\]
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