hydrogen ion

The positively charged ion of hydrogen, H⁺, formed by removal of the electron from atomic hydrogen and found in the form of hydronium ion in all aqueous solutions of acids.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

hydrogen ion

1. (Elements & Compounds) an ionized hydrogen atom, occurring in plasmas and in aqueous solutions of acids, in which it is solvated by one or more water molecules; proton. Formula: H⁺

2. (Elements & Compounds) an ionized hydrogen molecule; hydrogen molecular ion. Formula: H2⁺

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

hy′drogen i′on

ionized hydrogen of the form H⁺, found in aqueous solutions of all acids.

[1895–1900]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

hydrogen ion - a positively charged atom of hydrogen; that is to say, a normal hydrogen atomic nucleus

cation - a positively charged ion

proton - a stable particle with positive charge equal to the negative charge of an electron

hydrogen atom - an atom of hydrogen

Translations

hydrogen ion

n → ione m idrogeno

Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

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References in periodicals archive

Because increased sodium in the tubules increases hydrogen ion loss at the same time as potassium, diuretics may also induce a hypokalaemic metabolic alkalosis.

Understanding diuretics

Finally, 43 AdegC temperature, 500 rpm stirring rate, 1000 mg Radix Paeoniae Alba, 2.0 mol*L-1 hydrogen ion concentration, 0.084 g MnSO4, 0.835 g KBrO3, 1mL acetone and 100 mL total volume were chosen as the optimal experimental conditions.

Study on Electrochemical Fingerprints of Radix Paeoniae Alba

The term RTA is applied to a group of defects in bicarbonate reabsorption, hydrogen ion excretion, or both.

Primary Sjogren's Syndrome First Presenting as Hypokalemic Quadriparesis

3.2 Cross section of an hydrogen ion from photon flux

Physical properties of stars and stellar dynamics

The physiologic importance of limiting the change in hydrogen ion concentration within the body fluid compartments is well recognized.

Acid-base concepts and the Henderson-Hasselbalch equation

That molecule, a salt of cyanoform, has the same structure as the acid except it has lost the positive hydrogen ion, resulting in a negative molecule that is paired with a positive sodium ion.

Chemists finally create elusive acid: textbook chemical cyanoform was sought for over a century

The colour of the juice changes in response to changes in its hydrogen ion concentration.

Colourful cabbage

Except when the reducing agent can be protonated, the redox reaction of [S.sub.2][O.sub.8.sup.2-] was found to be independent of hydrogen ion concentration [14].

Kinetics and mechanism of the oxidation of naphthol green B by peroxydisulphate ion in aqueous acidic medium

The rapidly rising hydrogen ion concentration and falling blood pH cause the fatigue and cramping we know as the Wall.

Revisiting lactic acid confusion