Acid Dissociation Constant

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Acid Dissociation Constant

A quantitative measure of an acid’s strength, which corresponds to an equilibrium constant for the dissociation of a weak acid [A-] into [H+] and conjugate base in an aqueous solution.
ADC = [H+][A-]/[HA]
References in periodicals archive ?
Woolley, "Potentiometric method for determination of acid ionization constants in aqueous organic mixtures," Analytical Chemistry, vol.
where [[beta].sup.HDP.sub.MHDP], [[beta].sup.HT.sub.MHT], and [[beta].sup.T.sub.MT] are the stability constants of PDCA and tartaric acid; [f.sub.HDP], [f.sub.HT], and [f.sub.T] are the fractions of the respective weak acid ligand, which at constant pH value can be calculated using the PDCA ([pK.sub.1] = 2.16; [pK.sub.2] = 4.76) and tartaric acid ionization constants [10-11].