Here's why:
* Hydrogenation is the process of adding hydrogen (H₂) to a molecule, typically across a double or triple bond.
* 3-heptyne has a triple bond between the third and fourth carbon atoms.
* The catalyst facilitates the reaction, allowing the hydrogen to add to the triple bond in a stepwise manner.
* The first step results in the formation of an alkene (3-heptene).
* The second step results in the formation of an alkane (heptane).
Overall reaction:
3-heptyne + 2H₂ → heptane