hydronium ion

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hydronium ion

[hī′drō·nē·əm ¦ī‚än]
(inorganic chemistry)
H3O+An oxonium ion consisting of a proton combined with a molecule of water; found in pure water and in all aqueous solutions. Also known as hydrogen ion.
References in periodicals archive ?
Hydronium ions pass through the proton exchange membrane, which is a solid electrolyte in electrochemical cell.
The decrease in lead uptake by acid desorbent might be due to the increase of the concentrations of competing hydronium ions.
Regarding the study about the influence of the pH over the material's adsorption capacity, it can be seen from Figure 2, that at pH 1, due to the high concentration of hydronium ions, the adsorption of Cd(II) is drastically reduced.
Metal sorption starts when the pH rises to the range where most acidic ion exchange sites start to exchange hydronium ion for metal and the capacity reaches the maximum value in the pH range where all the ion exchange sites take part in the reaction and the functional group is able to form complex with the metal cations (37).
At low pH, the surface of the adsorbent was surrounded by hydronium ions that compete with metal ions, which prevented the metal ions approaching the binding sites on the adsorbent.