Ideality Due to Long-Range Interactions

Deviations from ideality Due to Long-Range Interactions 

For nonionic solutes at densities higher than the limiting dilute ideal case, we may introduce activity coefficients into Eq. (6.12.1) to account for deviations from Henry s law. Thus we write 

To appreciate the nature of the problem, suppose we take a system containing exactly two particles in a volume V. The pressure of such a system is given by 

We consider a system of N solvent molecules and any number of electrolyte solutes. We denote by M the number of ions of species i having charge (-e being the charge of an electron). 

Consider for simplicity the chemical potential of a 1 1 salt, which we denote by CA (for cation and anion). 

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