The equivalent conductances of two strong electrolytes at infinite dilution in $H_2O$ (where ions move freely through a solution) at $25^{\circ}C$ are given below:
$\lambda^{\infty}_{CH_3COONa} = 91.0 \ S \ cm^2 \ eq^{-1}$
$\lambda^{\infty}_{HCl} = 426.25 \ S \ cm^2 \ eq^{-1}$
What additional information/quantity is needed to calculate $\lambda^{\infty}$ of an aqueous solution of acetic acid?

• A
  The limiting equivalent conductance of $H^{+}$
• B
  $\lambda^{\infty}$ of chloroacetic acid $(ClCH_2COOH)$
• C
  $\lambda^{\infty}$ of $NaCl$
• D
  $\lambda^{\infty}$ of $CH_3COOK$