Weak acid — Science definition
An acid that ionizes only partially in water, so most of its molecules stay intact at any moment.
Where it is taught
- Acids & Bases — Acids, Bases & Titration, Physical Science: Chemistry, Grade 11
In use
A strong monoprotic acid such as HCl is essentially fully ionized in the usual dilute aqueous account; a weak acid has an equilibrium involving appreciable un-ionized species under appropriate conditions.
Acids & Bases