Explain about the variation of molar conductivity with concentration by Kohlraush studies?

Explanation

Kohlraush observed that, increase of molar conductance of an electrolytic solution with the increase in dilution. He deduced the following empirical relationship betwee the molar conductance `(Lambda_m)` and concentration of the electrolyte (c )
`Lambda_m = Lambda_m^@ - ksqrt(c )`
For strong electrolytes such as `KCl, NaCl` the plot `Lambda_m V_s sqrt(c )`, gives a straight line. It is also observed that the plot is not a linear one for weak electrolyte.