Why molar conductivity for acetic acid cannot be determined experimentally?
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Solution
Acetic acid is a weak acid. Hence its molar conductivity can be measured.
According to Kohlaraush Law, 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.