Conductivity of tetraphenylarsonium chloride (Ph4AsCl), tetraphenylphosphonium chloride (Ph4PCI), tetraphenylarsonium pertechnetate (Ph4AsTcO4), tetraphenylphosphonium pertechnetate (Ph4PTcO4), triphenyltin chloride (Ph3SnCl) and trioctyltin chloride (Oct3SnCl) solutions in nitrobenzene and chloroform was studied. On the basis of determined molar conductivity A values at different
concentrations of the electrolyte in solution, values of dissociation degree of the electrolyte α, molar conductivity at infinite
dilution A0 and dissociation costant Ki for compounds of type Ph4(As or P) (Cl or TcO4) were calculated. It was shown that for some of the investigated systems the Kohlrausch's empirical relation applies. In
chloroform solutions a parabolic dependence of molar conductivity on electrolyte concentration was observed which testifies
that a formation of ion triplets at higher electrolyte concentration can occur.