Thermodynamics of electrolytes. I. Theoretical basis and general equations

Recently Scatchard~0 and co-workers 2 ~ have extended and .elaborated the Guggenheim equations in sever~l ways4 First the Debye-HUckel term in equation (6) is subdivided into a series of terms with different l.coefficients of I 2 in ~ corresponding to different distances of closest approach for the s9lute components.Appropriate derivatives then yield correct but very complex formulas for the osmotic and activity coefficients.