oxoniumH₃O100%oxonium, oxonium, hydronium, hydroxoniumSpace reserved for adsPhysical characteristicsMolecular mass 19Reactions using oxoniumammonia + oxonium → ammonium + waterSynthesis of oxoniumDissociation of hydrogen iodide in waterDissociation of hydrogen bromide in waterDissociation of hydrogen chloride in waterDissociation of hydrogen fluoride in wateracetic acid + water → acetate + oxoniumCompound added to the database on May 2, 2020, last modified on August 30, 2022.