If ${\mathrm{\Lambda }}_{\mathrm{eq}}^{\mathrm{\infty }}\left(\mathrm{NaCl}\right),{\mathrm{\Lambda }}_{\mathrm{eq}}^{\mathrm{\infty }}\left(\mathrm{KCl}\right)\text{ and }{\mathrm{\Lambda }}_{\mathrm{eq}}^{\mathrm{\infty }}\left({\mathrm{K}}_2{\mathrm{SO}}_4\right)\text{ are 123.7, }147.0\text{ and }152.1{\mathrm{\Omega }}^{-1}{\mathrm{cm}}^2{\mathrm{eq}}^{-1}$, then the ${\mathrm{\Lambda }}_{\mathrm{eq}}^{\mathrm{\infty }}\left({\mathrm{Na}}_2{\mathrm{SO}}_4\right)$ would be