What is the outcome of halogenation on alkenes?

Halogenation of alkenes involves the addition of halogens (such as chlorine or bromine) across the double bond of the alkene. This reaction results in the formation of halogenoalkanes, which are organic compounds containing both carbon and halogen atoms.

The process occurs through a mechanism where the alkene's carbon-carbon double bond reacts with the halogen molecule, leading to the opening of the double bond. This results in the conversion of the alkene into a saturated compound, specifically a dihalide, as each carbon of the former double bond bonds to a halogen atom. The reaction typically takes place at room temperature, which is sufficient for the halogenation to occur.

In contrast, the other options involve processes that are not characteristic of halogenation: the production of alcohols relates to hydration reactions; the generation of alkenes from alkynes pertains to dehydrohalogenation and elimination reactions; while the prevention of water reactions is not a direct consequence of halogenation but rather relates to the stability of the halogenoalkane intermediates. Thus, the formation of halogenoalkanes at room temperature accurately describes the outcome of halogenation on alkenes.