Question

Why limiting molar conductivity of ${\mathrm{CH}}_3\mathrm{COOH}$ cannot be determined experimentally?

Answer 1

Molar Conductivity:

• Molar conductivity is the conductance property of a solution containing one mole of electrolyte or a function of a solution's ionic strength or salt concentration.

Acetic acid:

1. Acetic acid or Ethanoic acid has the chemical formula ${\mathrm{CH}}_3\mathrm{COOH}$.
2. Because the molar conductivity of ${\mathrm{CH}}_3\mathrm{COOH}$ rises with dilution, the molar conductivity of ${\mathrm{CH}}_3\mathrm{COOH}$ cannot be established experimentally.
3. Acetic acid is a weak acid. Hence its molar conductivity can be measured, According to Kohlaraush Law,
4. The plot of molar conductivity versus square root is a steep curve which can't be extrapolated to get the value of molar conductivity at infinite dilution. Also, the ionization is increased with dilution which leads to increase in molar conductivity as infinite dilution can't reached.

Hence, the limiting molar conductivity of ${\mathrm{CH}}_3\mathrm{COOH}$ cannot be determined experimentally.