The extended jones—dole equation

Abstract A number of authors have recently interpreted the relative viscosities of electrolytic solutions in terms of an extended Jones—Dole equation containing a term Dc 2 : The B -coefficients resulting from such analyses are not directly comparable with those arising from the simple Jones—Dole expression because of the high negative correlation between the B and D terms. There is therefore some difficulty in relating results from both types of analysis. In this paper a number of data sets are examined statistically with a view to establishing a standard procedure for obtaining estimates of the B -coefficients which relate exclusively to the linear term and are not influenced by the effect of higher terms. Two methods which recognize the high correlation of B and D terms are suggested.