A proton donor.
For example:
HCl(aq) → H⁺(aq) + Cl⁻
(hydrochloric acid is a strong acid)
CH₃COOH(aq) ⇌ CH₃COO⁻(aq) + H⁺(aq)
(ethanoic acid is a weak acid)
Synonyms:
Bronsted-Lowry acid
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A proton donor.
For example:
HCl(aq) → H⁺(aq) + Cl⁻
(hydrochloric acid is a strong acid)
CH₃COOH(aq) ⇌ CH₃COO⁻(aq) + H⁺(aq)
(ethanoic acid is a weak acid)