Kohlrauschs law of independent ionic mobilities

Each ion will make a contribution to the total conductivity of the solution  

Watch carefully the subscripts here, i.e. c+stoich, c stoich and Cstdch 

It is used for calculating the limiting molar conductivity, JsP, of an electrolyte from tabulated individual limiting ionic conductivities, X°, i.e. for very, very low concentrations. Under such conditions, the law can handle calculations of predicted limiting molar conductivities for both strong and weak electrolytes. 

For weak electrolytes this can be extremely useful, since it is very difficult to determine A° by extrapolation of experimental A values at various concentrations (see Sections 11.7 and 

There are two ways of using the law for estimating A° for a weak electrolyte, e.g. CH3COOH  

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