hydronium ion

American  

[hahy-droh-nee-uhm ahy-uhn, ahy-on] / haɪˈdroʊ ni əm ˌaɪ ən, ˌaɪ ɒn /

noun

1. the hydrogen ion bonded to a molecule of water, H 3 O + , the form in which hydrogen ions are found in aqueous solution.

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hydronium ion British  

/ haɪˈdrəʊnɪəm /

noun

1. chem another name for hydroxonium ion

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Etymology

Origin of hydronium ion

First recorded in 190510; < German Hydronium, contraction of Hydroxonium; see hydro- ², oxonium compound

Example Sentences

We have seen an introductory definition of an acid: An acid is a compound that reacts with water and increases the amount of hydronium ion present.

From Textbooks • Feb. 14, 2019

This may be explained via Le Châtelier’s principle as a left shift in the water autoionization equilibrium resulting from the stress of increased hydronium ion concentration.

From Textbooks • Feb. 14, 2019

Species above water but below hydronium ion are weak acids, undergoing partial acid ionization, wheres those above hydronium ion are strong acids that are completely ionized in aqueous solution.

From Textbooks • Feb. 14, 2019

On the other hand, when dissolved in strong acids, it is converted to the soluble ion by reaction with hydronium ion:

From Textbooks • Feb. 14, 2019

The ICE table defined x as equal to the bicarbonate ion molarity and the hydronium ion molarity:

From Textbooks • Feb. 14, 2019