Which type of reaction is used to convert alkenes to alkanes?

Alkenes can be converted to alkanes through the process of hydrogenation, which involves the addition of hydrogen gas (H2) across the double bond present in the alkene. This reaction typically requires a catalyst, such as platinum, palladium, or nickel, to facilitate the addition of hydrogen.

During hydrogenation, the double bond (C=C) is broken, and two hydrogen atoms are added to the carbon atoms that were involved in the double bond, resulting in a saturated hydrocarbon, which is an alkane. This process effectively converts the unsaturated alkene into a more stable, saturated alkane, increasing the number of hydrogen atoms in the molecule.

Other types of reactions listed do not specifically convert alkenes to alkanes. Hydrolysis typically involves the reaction of a compound with water, leading to the cleavage of bonds and is more relevant to reactions involving alcohols or carboxylic acids. Oxidation usually refers to the addition of oxygen or the removal of hydrogen, which would not apply in this case since it does not lead to the formation of an alkane from an alkene. Reduction is a broader term that refers to any reaction that involves a decrease in oxidation state, but in this particular context