The molar conductivities ${\mathrm{\Lambda }}_{\mathrm{NaOAc}}^{\mathrm{\infty }}$ and ${\mathrm{\Lambda }}_{\mathrm{HCl}}^{\mathrm{\infty }}$ at infinite dilution in water at 25 °Care 910 and 426.2 S ${\mathrm{cm}}^2 {\mathrm{mol}}^{-1}$' respectively. To calculate, ${\mathrm{\Lambda }}_{\mathrm{NOAc}}^{\mathrm{\infty }}$ the additional value required is