Thermodynamic quantities expressed in terms of molecular distribution functions

Thermodynamic quantities expressed in terms of molecular distribution functions 

Most of the relations discussed in this chapter apply to systems obeying the assumption of pairwise additivity for the total potential energy. We shall indicate, however, how to modify the relations when higher order potentials are to be incorporated in the formal theory. In general, higher order potentials bring in higher order MDFs. Since very little is known about the analytical behavior of the latter, such relationships are rarely useful in applications. 

Of particular importance to solution chemistry is the expression for the chemical potential, first derived by Kirkwood (1933). We shall devote a relatively large part of this chapter to discuss various expressions for the chemical potential. 

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