Addition of `HBr` to but`-1-`ene yields

The addition of HBr to but-1-ene in the presence of dibenzoyl peroxide yields

(A) Addition of HBr on but-2-ene gives two structural isomeric products (R) Addition of HBr on but-2-ene follows Markownikoff's rule.

Addition of HBr to propene yields 2-bromopropane, while in the presence of benzoyl peroxide, the same reaction yields 1-bromopropane. Explain and give mechanism.

Addition of HBr to propene yields 2-bromopropane, while in the presence of benzoyl peroxide, the same reaction yields 1-bromopropane. Explain and give mechanism.

Addition of HBr to propene yields 2-Bromopropane, while in the presence of Benzoyl peroxide. The same reaction Yields 1- Bromopropane. Give reason. Justify your answer.

Explain the mechanism of the following reactions: a) Addition of bromine and ethylene. b) Addition of HBr on ethylene. c) Dehydration of an alcohol. d) Addition of HBr on buta-1,3-diene. e) Addition of HCl on 3,3-dimethylbut-1-ene.

Addition of HBr to propene yields 2-bromopropane, what happens if benzoyl peroxide is added to the above reaction.