Assignment of Individual Ion-Pair Extraction Constants Based on the K_ph4As+=K_Pb4B-; K_benzene= 1 Assumption

Abstract

It was shown in the preceding paper that the extraction constant (K_ex) for 1: 1 ion-pair extraction systems can be expressed as a product of three independent constants (individual extraction constants), namely,
logK_ex=logK_cation+log_anion+logK_solvent
where K_cation, K_anion and K_solvent are the individual extraction constants for the cation, anion and solvent, respectively. In the present paper, the individual extraction constants was assigned to some ions and solvents on the assumption
K_ph4As++=K_Pb4B-, K_benzene=1.0
The assigned values of individual extraction constants were shown to be useful in estimating the value of K. for unknown combinations of cation, anion and solvent and in estimating the extractabilities of ions and extracting powers of the solvents.