State Kohlrausch Law. How is it useful to determine the molar conductivity of weak electrolyte at infinite dilution.

The conductivity of a $0.01 \mathrm{M}$ solution of a $1:1$ weak electrolyte at $298\mathrm{K}$ is $1.5 \mathrm{x} {10}^{-4} \mathrm{S} {\mathrm{cm}}^{-1}$.

Find molar conductivity of the solution.

The conductivity of a $0.01 \mathrm{M}$ solution of a$1:1$ weak electrolyte at $298 \mathrm{K}$ is $1.5 \times {10}^{-4} \mathrm{S} {\mathrm{cm}}^{-1.}$

Find degree of dissociation and the dissociation constant of the weak electrolyte.

Given that,

$$\begin{gathered} {{\mathrm{\lambda }}^{°}}_{\mathrm{cation}}= 248.2 \mathrm{S} {\mathrm{cm}}^2 {\mathrm{mol}}^{-1} \\ {{\mathrm{\lambda }}^{°}}_{\mathrm{anion}}= 51.8 \mathrm{S} {\mathrm{cm}}^2 {\mathrm{mol}}^{-1} \end{gathered}$$

Arrange the following solutions in the decreasing order of specific conductance.

$$\begin{gathered} \mathrm{i}) 0.01 \mathrm{M} \mathrm{KCl} \\ \mathrm{ii}) 0.005 \mathrm{M} \mathrm{KCl} \\ \mathrm{iii}) 0.1 \mathrm{M} \mathrm{KCl} \\ \mathrm{iv}) 0.25 \mathrm{M} \mathrm{KCl} \\ \mathrm{v}) 0.5 \mathrm{M} \mathrm{KCl} \end{gathered}$$