- At infinite dilution all electrolytes ionise completely.
- Each ion migrates independently
- Each ion contributes a definite value to the total equivalent conductance of the electrolyte.
Let us consider the equivalent conductance of sodium chloride at infinite dilution.
Application of Kohlraush’s law :
The important use of Kohlraush’s law is to deduce the equivalent conductance value at infinite dilution of the weak electrolytes correctly by arithmetically combining the equivalent conductance values at infinite dilution of strong electrolyte in appropriate manner.
Problem
Ans: 390.71 ohm^-1. cm2 gm equiv^-1