acidity function


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acidity function

[ə′sid·əd·ē ‚fəŋk·shən]
(chemistry)
A quantitative scale for measuring the acidity of a solvent system; usually established over a range of compositions.
References in periodicals archive ?
Effect of acidity function on the production of bio-methane in pure and mixed samples:
After a powdered physical treatment practice, samples were treated under different operating conditions of temperature (mesophilic and thermophilic), bacteria seeding cultures (methanococcus bornchii and methanobacterium formicum), acidity functions between (3-10) pH, respectively.
The acidities of ILs were characterized and determined on the basis of the Hammett acidity function [18].
As shown in the followi ng equation, the Hammett acidity function is expressed as: H= PK (I)aq + log ([I]/[IH]+).
Gillespie and Peel [5] extended Hammett and Deyrup's acidity function measurements into these completely nonaqueous and still more highly acidic solutions.
His publications dealt with topics in the fields of alkaloids, terpenes, steroids, amino-acids and peptides, carbohydrates, heterocyclic compounds, stereochemistry, conformational analysis, molecular volumes, ion mobilities, paper electrophoresis, dipole moments, electrostatic effects, acidity functions, acid-catalyzed reactions, solvent effects, and graph theory.