Debye-Huckel's equation is given as ${\mathrm{\Lambda }}_{\mathrm{c}}={\mathrm{\Lambda }}_0-\mathrm{A}\sqrt{\mathrm{C}}$. It is useful to determine molar conductance at infinite dilution for all the following electrolytes except

• A

  ${\mathrm{CH}}_3{\mathrm{COONH}}_4$

• B

  ${\mathrm{CH}}_3\mathrm{COOH}$

• C

  ${\mathrm{Na}}_2{\mathrm{SO}}_4$

• D

  ${\mathrm{BaCl}}_2$