Question

In methyl alcohol solution, bromine reacts with ethylene to yield BrCH₂CH₂OCH₃ in addition to 1,2-dibromoethane because 

(a) the ion formed initially may react with Br^- or CH₃OH 

(b) the methyl alcohol solvates the bromine 

(c) the reaction follows Markownikoff's rule 

(d) this is a free radical mechanism 

Answer 1

(a) the ion formed initially may react with Br^- or CH₃OH 

In methyl alcohol solution, bromine reacts with ethylene to yield BrCH₂​CH₂​OCH₃​ in addition to 1,2-dibromoethane because the intermediate bromonium ion formed initially may react with Br⁻ or CH₃​OH.