Ions

Kohlrausch's law is related to the concept of the migration of ions in a solution. According to this law, the limiting molar conductivity of an electrolyte can be separated into the individual contributions of its ions. This is expressed by the formula:

Λ⁰_m = λ⁰₊ + λ⁰_-

where:

• Λ⁰_m is the limiting molar conductivity of the electrolyte.
• λ⁰₊ and λ⁰_- are the limiting molar conductivities of the cation and anion, respectively.

This principle helps in understanding how each ion independently contributes to the overall conductivity of a solution. Therefore, the correct answer is Migration of ions.