ethanolhydrogen iodide⟶ΔiodoethanewaterThis is a "Bimolecular Nucleophillic Substitution (SN2)"-reaction.Same reagentsethanol + hydrogen iodide → ethane + iodine + waterPotentially competingethanol → ethene + waterethanol + hydrogen iodide → ethane + iodine + waterLessonsSubstitution Reactions of Alcohols