2. Alkgnes also react with HX ( HBr or HCl ) in the same way as do alkenes, but they do so twice. The first HBr molecules reacts with one of the bonds of the alkyne forming the more stable carbocation intermediate as usual followed by attack of Bron the carbocation. When that reaction is completed, you get a molecule that still has one bond to which a Br is attached. The second HBr then reacts with the remaining bond, again making the more stable carbocation intermediate. Note that the more stable cation in the second part is stabilized by resonance from the Br (a heteroatom stabilized carbocation). This determines the regiochemistry of the second step. With this information, predict the product of the reaction sequence below, and write down all intermediate steps, using curved arrows to indicate the movement of electrons