Which of the following is prepared by the reaction of an alkene with HX ?
Alkenes react with hydrogen halides (e.g., HBr ) via electrophilic addition to form alkyl halides. CH₃CH₂CH₂Br can be made from CH₃CH=CH₂ with HBr (peroxide conditions).
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Classification and Nomenclature and Isomerism of Haloalkanes