Solution of the associative mean spherical approximation for a multicomponent dimerizing hard-sphere multi-Yukawa fluid

The analytical solution of the associative mean spherical approximation (AM SA) for a Yukawa dimerizing multicomponent hard-sphere fluid is derived. Th e general multi-Yukawa case is discussed. The simpler one-Yukawa case with factorizable coefficients is explicitly solved. As in the previously discus sed electrolyte case the solution of the AMSA reduces to the solution of on ly one nonlinear algebraic equation for the scaling parameter Gamma(B). The analytical results for the AMSA closure is illustrated by numerical exampl es and computer simulation for the one-component one-Yukawa dimerizing flui d. Good agreement between theoretical and computer simulation results was f ound for both the thermodynamic properties and the structure of the system. (C) 2000 American Institute of Physics. [S0021-9606(00)50127-5].