Question

Kohlrausch law is related to which of the following term?

• A. Osmosis
• B. Diffusion
• C. Effusion
• D. Migration of ions

Answer 1

The Correct Option is D

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.

Answer 2

Kohlrausch's law is concerned with the concept of ion migration, which is a key topic in the study of electrolyte conductivity in chemistry. This law states that each ion contributes independently to the total conductivity of an electrolyte. It allows for the calculation of molar conductivity at infinite dilution by summing the individual contributions from cations and anions, derived mathematically as:

\(Λm = v_+λ_+ + v_-λ_-\)

where Λ_m is the molar conductivity at infinite dilution, λ₊ and λ_- are the limiting molar conductivities of the cation and anion, respectively, and v₊ and v_- are the stoichiometric coefficients of the respective ions.

Therefore, Kohlrausch's law is primarily related to the migration of ions within a solution, rather than osmosis, diffusion, or effusion, which pertain to other physical processes.

The correct answer is: Migration of ions