Abstract
The extraction of HCl, HBr and Hl by primary, secondary and tertiary alkyl amines in benzene has been studied. The affinity constant of the acid-amine reaction has been determined by potentiometric titration for each amine with all the three acids. The affinity constant values decrease by increasing the amine size and decreasing the anion radius. Both these two opposite effects have been discussed in terms of electrostatic interaction in the organic phase and of ion-water interactions in the aqueous phase.
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