of nonelectrolyte and electrolyte solutions. A new equation for the excess Gibbs energy
function is developed based on the local composition expression of Wilson and the random
reference state. This new function, the nonelectrolyte Wilson nonrandom factor (N-Wilson-
NRF) model, is presented in the form of a molecular framework so that it can be used for
both nonelectrolyte and electrolyte solutions. Without any particular assumptions for ionic …