EXTENSION OF MODIFIED CLASSICAL THEORY TO NUCLEATION OF LKAP FROM AQUEOUS SOLUTION

The dependence of the induction period of crystalli zation on super cooling was determined for the syst em lithium chloride—potassium acid phthalate (KAP) over the co mposition of 1mole % LiCl2. This dependence can be described by 1/ ( lnS) 2 against ln τ curve. In order to reduce the effect of heterogene ous nucleation on the nucleation parameters, the interfacial energy was c alculated from the slopes determined in the linear region of the line plots. Nucleation parameters like free energy change, rate of nucleation and critical radius were determined using the value of interfacial energy. Correction was made to the interfacial energy based on the thermodynamically approach. An attempt has been mad e to calculate the nucleation parameters correspond ing to the critical super saturation ratio using the modif ied classical nucleation theory.