ii)A Mec
Markovnikov product:hanism for the Reaction
Addition of a Hydrogen Halide an Alkene
Step 1 CC H X CCH
+ slow +
The π electron
from HX toof the alkene form a bond with a proton
forma carboncation anda halide ion.+ X −+ CCH
Step 2+ fast CCHX
The halide ion reacts with the carboncation by
donating an electron pair; the result is an alkyl halide.X −(^)