- ionized hydrogen of the form H+, found in aqueous solutions of all acids.
Origin of hydrogen ion
First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hydrogen ion
That is, different concentrations of hydrogen-ion or of hydroxide-ion are required to change their colors.
It is very likely that in aqueous acids, a large proportion, at least, of the hydrogen-ion is similarly combined with water.
The hydrogen-ion will very decidedly reduce the concentration of the acetate-ion, acetic acid being a weak acid (table, p. 104).
- 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 +
- an ionized hydrogen molecule; hydrogen molecular ion. Formula: H 2 +
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