الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
A general survey is given in Chapter I for classification of solvents,solute-solvent
interactions , properties of the used mixed solvent and importance of malic acid including the
effect of solvent on the dissociation reactions of malic acid and their thermodynamic
consequences , beside the thermodynamics of ionic associations have been reviewed .
Chapter II discusses the practical part of this work in which the electromotive force EMF
method used for the determination of both acid and ion-pair dissociation constants in
acetonitrile-water media of varying solvent composition (0-50 wt% of AN) and within the
temperature range ( 30-50 ℃). The EMF measurements have been performed with Crison pHmeter
MM 41 type read to ±0.1 mV, beside the method of preparations of the used solutions
and materials have been discussed.