| Abstract: | Assuming the lateral interaction energy of the adsorbed molecules of solvent, solute and impurity in an adlayer of crystal-impure solution interface, the partition function and its partial derivatives are calculated using the Bragg-William monolayer model with empty sites. The condition for ideality and deviations from ideality in the adlayer are discussed. The effects of impurity on the generalized form of the BCF differential equation for surface diffusion is established and the crystal growth rate as a function of supersaturation is calculated from numerical intergration. The applicability of this model for crystal growth from impure solution is discussed. |
