Virial expansions for ideal self-associating systems.

Theoretical virial equations for self-associating systems governed by mass action have been derived assuming the solute to be ideal except for this solutesolute interaction. In particular, monomer-polymer association involving two molecular species and isodesmic association involving an indefinite number of molecular species have been treated analytically. The usefulness of such virial equations is severely limited by their extremely narrow interval of convergence.