The equivalent conductances of two strong electrolytes at infinite dilution in ${\text{H}}_2\text{O}$ at $25^{\circ }\text{C}$ are given:${\Lambda }_{{\text{CH}}_3\text{COONa}}^0=91.0{\text{S cm}}^2\text{/equiv}$${\Lambda }_{\text{HCl}}^0=426.2{\text{S cm}}^2\text{/equiv}$ What additional information is needed to calculate ${\Lambda }^0$ of acetic acid?

1. A
   ${\Lambda }^0$ of $\text{NaCl}$
2. B
   ${\Lambda }^0$ of ${\text{CH}}_3\text{COOK}$
3. C
   The limiting equivalent conductance of ${\text{H}}^{+}$
4. D
   ${\Lambda }^0$ of chloroacetic acid