Answer: We obtain the alkyne 2-pentyne through E2 reaction mechanism.
Explanation:
Alkyl halides are compounds that contain a carbon chain in which one or more hydrogen atoms have been replaced by a halogen atom (F, Cl, Br, I) and are characterized by having halogen atoms in adjacent carbons. In the dehydrohalogenation the alkyl halide is reacted with a strong base. As a result an alkyne is obtained.
In this case we use sodium amide to favor the type E2 reaction mechanism (type 2 elimination) and we obtain the following alkyne:
