Erratum Mordechai L. Kremer, author of "Thermodynrtmic Functions of Mixtures" in the December issue of TaIs [42,649 (1965)1,indicates that the following error appeared in the article. JOURNAL, Equation (9) is incorrect since the integration constant c in general is not eero far nZO. This difficultydoesnot arise if the treatment is basedon a thermodynamic function Y far which
Y
=
k(T,p,xi).n
(1)
and from which we can arrive a t the other functions by operations involving partial differentiation and linear combination. The free energy function G satisfies this requirement. Equation (1) should he regarded as an assum~tionfor G. It is verified bv the vdiditv " of (1) , . for the derived amntities like the volume and heat capacity of mixtures which are subject to direct measurement.
256
/
Journal of Chemical Education