Variation of Molar Conductance with Concentration

Molar conductance (Λ_m) varies with the concentration of an electrolyte:

• For strong electrolytes: Molar conductance increases slightly with dilution because the electrolytes are almost completely ionized in solution. However, the increase is not linear due to the presence of ion interactions at higher concentrations.
• For weak electrolytes: Molar conductance increases significantly with dilution. This is because weak electrolytes ionize more as the solution is diluted, thus increasing the number of ions available to conduct electricity.

At infinite dilution, the molar conductance reaches a maximum value, known as the limiting molar conductance (Λ_m⁰), where the ion interactions are minimal.