Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A hydrated hydrogen ion, H3O+.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun inorganic chemistry the hydrated hydrogen ion, H3O+

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[hydr(o)– + (amm)onium.]

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Examples

  • For chemists, the term hydronium ion (H3O+) is often substituted for hydrogen ion to reflect the association of a hydrogen ion with a molecule of water.

    PH 2006

  • One might wonder whether an up quark, an uranium nucleus, a hydronium ion, a charged water droplet, and a balloon that has been rubbed on someone's jumper all belong to one kind.

    Natural Kinds Bird, Alexander 2008

  • Goldman said he was certain glycine would be formed within the first microsecond through a spontaneous reaction of the glycine/CO2 complex with a hydronium ion to form glycine, water and carbon dioxide, but the simulation is too complex to run long enough to see this.

    PhysOrg.com - latest science and technology news stories 2010

  • If the pH of groundwater is below pH 5, hydronium ions (H+) free aluminum ions from silicates in the soil.

    Featured Articles - Encyclopedia of Earth 2010

  • Goldman said he was certain glycine would be formed within the first microsecond through a spontaneous reaction of the glycine/CO2 complex with a hydronium ion to form glycine, water and carbon dioxide, but the simulation is too complex to run long enough to see this.

    PhysOrg.com - latest science and technology news stories 2010

  • Goldman said he was certain glycine would be formed within the first microsecond through a spontaneous reaction of the glycine/CO2 complex with a hydronium ion to form glycine, water and carbon dioxide, but the simulation is too complex to run long enough to see this.

    PhysOrg.com - latest science and technology news stories 2010

  • The glycine/carbon dioxide complex would react spontaneously with a hydronium ion to produce glycine, water and carbon dioxide, he says.

    Scientific American 2010

  • Goldman said he was certain glycine would be formed within the first microsecond through a spontaneous reaction of the glycine/CO2 complex with a hydronium ion to form glycine, water and carbon dioxide, but the simulation is too complex to run long enough to see this.

    PhysOrg.com - latest science and technology news stories PhysOrg Team 2010

  • There were also several hydronium ions - water plus a hydrogen ion.

    Scientific American 2010

  • Goldman said he was certain glycine would be formed within the first microsecond through a spontaneous reaction of the glycine/CO2 complex with a hydronium ion to form glycine, water and carbon dioxide, but the simulation is too complex to run long enough to see this.

    PhysOrg.com - latest science and technology news stories PhysOrg Team 2010

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