3.10     The conductivity of sodium chloride at 298 K has been determined at different concentrations and the results                are given below:

 Concentration/M  

0.001   0.010 0.020 0.050

  0.100 

10^{2}\times k/S m^{-1}

 1.237 11.85 23.15 55.53

106.74

 Calculate \Lambda _{m} for all concentrations and draw a plot between \Lambda _{m} and C^{1/2}.Find the value of \Lambda _{m}^{0}.

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