A mixture of hept-1-yne, hept-2-yne, and hept-3-yne was hydrogenated in the presence of a platinum catalyst until hydrogen uptake ceased. If one assumes that the hydrogenation went to completion, how many $\underline{\text{ different }}$ seven-carbon hydrocarbons were produced?

Question

A mixture of hept-1-yne, hept-2-yne, and hept-3-yne was hydrogenated in the presence of a platinum catalyst until hydrogen uptake ceased. If one assumes that the hydrogenation went to completion, how many $\underline{\text{ different  }}$ seven-carbon hydrocarbons were produced?

Quizplus · Accepted Answer

When hept-1-yne, hept-2-yne, and hept-3-yne are fully hydrogenated, they all produce the same alkane, heptane, because the position of the triple bond does not affect the final saturated hydrocarbon.

A Mixture of Hept-1-Yne, Hept-2-Yne, and Hept-3-Yne Was Hydrogenated in the Presence