Brønsted acid

https://doi.org/10.1351/goldbook.B00744
A molecular entity capable of donating a hydron (proton) to a base, (i.e. a 'hydron donor') or the corresponding chemical species. For example: $\ce{H2O}$, $\ce{H3O^{+}}$, $\ce{CH3CO2H}$, $\ce{H2SO4}$, $\ce{HSO4^{−}}$, $\ce{HCl}$, $\ce{CH3OH}$, $\ce{NH3}$.
See also: conjugate acid–base pair
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1091 [Terms] [Paper]
Citation: 'Brønsted acid' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.B00744 RIS BibTex EndNote
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