Densities of the Ternary Systems Y(NO3)3 + La(NO3)3 + H2O, La(NO3)3 + Ce(NO3)3 + H2O, and La(NO3)3 + Nd(NO3)3 + H2O and Their Binary Subsystems at Different Temperatures

Densities were measured for the ternary systems Y(NO3)3 + La(NO3)3 + H2O, La(NO3)3 + Ce(NO3)3 + H2O, and La(NO3)3 + Nd(NO3)3 + H2O and their binary subsystems at (293.15, 298.15, and 308.15) K. The results were used to test the applicability of simple equations for the density of the mixed solutions. The predictions of the simple equations agree well with measured values, indicating that the densities of the examined electrolyte solutions can be well predicted from those of their constituent binary solutions by the simple equations.