Identify the major product that is obtained when 2-hexyne is treated with H2 and Lindlar's catalyst.

cis-2-hexene

Explanation:

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In this case, since a Lindlar's catalyst is mainly composed by palladium, which is a transition metal with a very exceptional surface area which makes it a suitable catalyst for hydrogenation reactions by which hydrogen is added to the insaturation in order to make a double bond where the triple bonds was in an alkyne, based on the attached picture we can see that the major product of that reaction is cis-2-hexene.

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