acid-base equilibrium
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ac·id-base equilibrium
(ăs′ĭd-bās′)n.
A state of chemical equilibrium that exists when both members of a conjugate acid-base pair are present in solution.
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| Noun | 1. |  acid-base equilibrium - (physiology) the normal equilibrium between acids and alkalis in the body; "with a normal acid-base balance in the body the blood is slightly alkaline"physiology - the branch of the biological sciences dealing with the functioning of organisms chemical equilibrium, equilibrium - a chemical reaction and its reverse proceed at equal rates |