Composition , analytical mixed crystals

However, the calculation of NAO( f)> which is the matrix composition at explicit solution to the coupled diffusion equations of the components before and behind the reaction front. Since the transport coefficients in these mixed crystals depend on local composition, one therefore cannot find analytical solutions. Only if the A2+ ions are almost immobile (DA< DB) do we have NAO( F) =N 0. This specific case has been discussed in the literature [H. Schmalzried (1984)]. 

Two general methods, the analytical method and the synthetic method (Grant and Brittain 1995), are available for determining solubility. In the analytical method, the temperature of equilibration is hxed, while the concentration of the solute in a saturated solution is determined at equilibrium by a suitable analytical procedure. The analytical method can be either the traditional, common batch agitation method, or the more recent flow column method. In the synthetic method, the composition of the solute-solvent system is hxed by appropriate addition and mixing of the solute and solvent, then the temperature at which the solid solute just dissolves or just crystallizes is carefully bracketed. 

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