IUPAC--NIST Solubility Data Series \#.
Transition and 12 to 14 Main Group Metals, Lanthanide, Actinide and Ammonium Halates

update (2007-04-26)

Please take the source files for ``soly_fit_rmiya'' (TAR+GZIP, 9 kB).

Please take the all results on fitting calculation in our halate volume (TAR+GZIP, 118 kB).

• converting units of solubility
  mass fraction, mole fraction, molality (mol kg^-1), molarity (mol dm^-3)
• least-square fitting to solubility data
  • mole fraction, for hydrated salt
    Y_x = \frac{A}{(T / {\rm K})} + B\,\ln\left( T / {\rm K} \right) + C + D\,(T / {\rm K}),
    where Y_x = \ln\left( \frac{x^v (1 - x)^v (v + r)^{v + r}}{r^r (1 + x)^{v + r}} \right).
    In the above eq., $r$ is the solvation number in the equilibrium solid phase, and $v$ is the number of ions produced upon dissolution.
  • molarity
    \ln \left( \frac{c_{\rm i}}{\text{mol dm}^{-3}} \right) = \frac{A}{(T / {\rm K})} + B\,\ln\left( T / {\rm K} \right) + C + D\,(T / {\rm K}),
  • mole fraction, for anhydrated salt (r = 0) or pure water (x = 0)
    x = \frac{A}{(T / {\rm K})} + B\,\ln\left( T / {\rm K} \right) + C + D\,(T / {\rm K}).
• obtaining quadratic equation