Kohlrausch law of independent migration of ions and its applications

It states that limiting molar conductivity of an electrolyte  is the sum of the individual contributions of the anion and cation of the electrolyte.

ü  Thus, if λ°_Na+ and λ°_{Cl -}  are limiting molar conductivity of the sodium and  chloride ions , then the limiting molar conductivity for sodium  chloride is given by the equation:   

                     Ë°_m(NaCl) = λ°_Na+ + λ°_{Cl -} 

Applications of Kohlrausch law 

This law may be used to determine the limiting molar conductivity, ‘λ°_m’ degree of dissociation ‘α’ and dissociation constant ‘K_a’ of a weak electrolyte