Answer:
four
Explanation:
Recall that the hydrogenation of 1-heptyne, 2-heptyne, and 3-heptyne is an addition reaction. The hydrogen is added across the triple bond in the presence of palladium serving as the catalyst.
Note that 1-heptyne and 2-heptyne do not exist as geometric isomers hence they yield one corresponding hydrocarbon each. However, 3-heptyne exhibits geometric isomerism. As a result of this, 3-heptyne yields cis and trans products making a total of four seven-carbon hydrocarbons produced.
So, the number of seven carbon hydrocarbons produced is one.
1-heptyne, 2-heptyne, and 3-heptyne
Note that if there is excess hydrogen, then all triple bonds will be substituted by hydrogen so only heptane is formed, double bonds and tirple bonds disappear to
[tex]CH_3-(CH_2)_5-CH_3[/tex]
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