ionization constant


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ionization constant

[‚ī·ə·nə′zā·shən ¦kän·stənt]
(physical chemistry)
Analog of the dissociation constant, where k = [H+][A-]/[HA]; used for the application of the law of mass action to ionization; in the equation HA represents the acid, such as acetic acid.
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Robert Fraczkiewicz, team leader for ADMET Cheminformatics for Simulations Plus, said, "The prediction of ionization constants (called pKa's) for molecules is fundamental to the prediction of many other molecular properties.
A new module for the prediction of ionization constants (pKa's) tells researchers under what conditions of acidity (pH) a molecule will ionize.