Which suffix denotes a hydrocarbon with a double bond?

The suffix that denotes a hydrocarbon with a double bond is -ene. This suffix is used specifically for alkenes, which are a class of hydrocarbons characterized by the presence of one or more double bonds between carbon atoms. The presence of the double bond affects both the physical and chemical properties of the compound, particularly in terms of reactivity.

In contrast, the suffix -yne indicates a triple bond, which corresponds to alkynes, while -ane signifies a saturated hydrocarbon with no double or triple bonds, referring to alkanes. The suffix -ol is used for alcohols, which contain a hydroxyl (-OH) group, and is unrelated to the bonding between carbon atoms. Understanding these suffixes is crucial for identifying the structure and reactivity of organic compounds.