Chemistry - Electrochemistry Question with Solution | TestHub

${\mathrm{CaSO}}_4$ is sparingly soluble, so Λ cannot be measured over a range of concentrations and extrapolated: (B) is not possible.

By Kohlrausch's law ${\Lambda }^{\infty }({\mathrm{CaSO}}_4)$ = ${\Lambda }^{\infty }({\mathrm{CaCl}}_2)$ + ${\Lambda }^{\infty }({\mathrm{Na}}_2{\mathrm{SO}}_4)$ - $2{\Lambda }^{\infty }(\mathrm{NaCl})$: (A).

Answer: (A).