hydronium ion

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hydronium ion

(haɪˈdrəʊnɪəm)
n
(Chemistry) chem another name for hydroxonium ion
[C20: from hydro- + (amm)onium]

hy•dro′ni•um i′on

(haɪˈdroʊ ni əm)
n.
the hydrogen ion bonded to a molecule of water, H3O + , the form in which hydrogen ions are found in aqueous solution.
[< German Hydronium (1907), contraction of Hydroxonium; see hydro-2, -onium]
References in periodicals archive ?
The main chemical reaction on the anode is water oxidation that leads to formation of the hydronium ions and oxygen:
The low Cd biosorption at pH less than 4 has been suggested to the competition among metal ions from hydronium ions for the available biosorption sites.
No adsorption was observed at low pH values due to opposition of hydronium ions with the metal ions.
One of the main effects of the medium's pH over the sorption process is related to presence of hydronium ions which may cause the protonation of the adsorption sites (obviously this process is more evident at low pHs).
At lower pH (acidic pH), the adsorbent surface will be completely covered with hydronium ions which compete strongly with metal ions for adsorption sites.