Molar conductivity and conductivity of an electrolyte

[Dexter Neutron]

if ∧_m = ∧_m^o - A√c
then till where is this formula ∧_m = κ/c applicable because if for infinite dilution c = 0 it gives molar conductivity infinite.

Please explain how conductivity and molar conductivity varies with concentration of electrolyte.

 

[Borek]

where is this formula ∧m = κ/c applicable because if for infinite dilution c = 0 it gives molar conductivity infinite

Hint: it doesn't.