A scaled nucleation model for ideal binary systems

A scaled binary nucleation model for ideal systems is presented and used to analyze the experimental hexanol-ethanol data of Strey and Viisanen at 260 K. A major feature of the scaled nucleation rate is the rate prefactor, J( 0), which is only weakly T (and composition) dependent and here is approxim ated by a constant. The model gives surprisingly good agreement with the ex perimental activity plot, and the scaled model method for finding the criti cal cluster composition (with binary surface tension composition variation) provides a better fit to the experimental data than the revised classical model. (C) 1999 Elsevier Science B.V. All rights reserved.