1. Using the data on the properties of solutions of substance A in water:
1) plot the graphs of the dependence of the specific and equivalent electrical conductivity of solutions of substance A on dilution V;
2) check whether solutions of substance A in water obey Ostwald's dilution law;
3) calculate for substance A, using the data on the dependence of equivalent electrical conductivity on concentration, the equivalent electrical conductivity at infinite dilution and compare the result with the reference data.
Substance A: (СH3)2AsOOH T=298 K

s, mol/l r, Ohm • m
0.1 131
0.05 280
0.03 235
0.01 402
0.005 582
0.003 796
0.001 1310

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