Alkynes undergo hydrogenation to give alkanes, just as alkenes do. Draw and name the products that would result from hydrogenation of the alkynes shown in Problem 13.25.

Verified step by step guidance

1. Identify the alkyne structure from Problem 13.25. An alkyne is a hydrocarbon with at least one carbon-carbon triple bond.
2. Understand that hydrogenation involves adding hydrogen (H2) across the triple bond of the alkyne, converting it into a single bond.
3. Use a catalyst, typically palladium (Pd), platinum (Pt), or nickel (Ni), to facilitate the hydrogenation reaction.
4. Draw the resulting alkane structure by replacing the triple bond with a single bond and adding hydrogen atoms to each carbon involved in the original triple bond.
5. Name the resulting alkane by identifying the longest carbon chain and applying IUPAC naming rules, ensuring to adjust for any substituents or branches.

Key Concepts

Hydrogenation

Hydrogenation is a chemical reaction that involves the addition of hydrogen (H2) to a compound, typically an unsaturated hydrocarbon. In the case of alkynes, this process converts the triple bond into a single bond, resulting in the formation of alkanes. This reaction is often facilitated by catalysts such as palladium, platinum, or nickel, which help speed up the reaction without being consumed.

Alkynes

Alkynes are a class of hydrocarbons characterized by at least one carbon-carbon triple bond. They are unsaturated compounds, which means they have fewer hydrogen atoms than alkanes or alkenes. The general formula for alkynes is CnH2n-2, where 'n' is the number of carbon atoms. Common examples include ethyne (acetylene) and propyne.

Alkanes

Alkanes are saturated hydrocarbons that contain only single bonds between carbon atoms, following the general formula CnH2n+2. They are less reactive than alkenes and alkynes due to the absence of double or triple bonds. Alkanes are typically found in natural gas and petroleum, and they serve as important fuels and feedstocks in the chemical industry.