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

Q.10:The conductivity of sodium chloride at 298 K has been determined at different concentrations and the results are given below:

Calculate Λm for all concentrations and draw a plot between Λ_m and c^½. Find the

value of Λ^o_m .

 Solution:

Steps of table

Divide by 10² to get k/sm^–1

Divide by 100 to concert m^–1to cm^–1

Now draw the graph between Λ_m and c^½.

At zero concentration value of Λ_m = 124 so that the value of Λ^o_m = 124.0 S cm ² mol^–1