Predict the product for each of the following reactions Hint/ Explanation:

- For the first reaction, HCl will add to the carbon atoms of the triple bond. The addition is stereoselective. A similar addition occurs with the resulting compound and HBr. Consider Markovnikov\'s rule for determining the regiochemistry.

- Internal alkynes undergo stereoselective hydrohalogenation via anti addition to give the (Z) product.

1.Explanation | Common mistakes | Hint for next step

The triple bond in an alkyne abstracts a proton from a hydrogen halide and forms an intermediate. Then, the chlorine ion attacks the electrophilic carbon atom and forms a halogenated alkene

2.Explanation | Common mistakes

The double bond in an alkene abstracts hydrogen from hydrogen bromide and forms a carbocation in a more substituted site. The hydrogen atom is attached on the right side carbon because that carbon atom contains a more substituted hydrogen atom which follows Markovnikov’s rule. Then, the bromine ion attacks a carbocation and forms a haloalkane as a product.

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