State and explain Kohlrausch's law of independent migration of ions.
Understand the Problem
The question is asking for a definition and explanation of Kohlrausch's law of independent migration of ions, a concept in chemistry related to the behavior of ions in solution. The law states that the conductivity of an electrolyte is determined by the individual contributions of its ions and their movement, which can occur independently of one another. Therefore, we will outline the law and explain its implications in ionic solutions.
Answer
At infinite dilution, each ion migrates independently and contributes individually to molar conductivity, forming the sum of these contributions.
Kohlrausch's law of independent migration of ions states that at infinite dilution, each ion migrates independently of its co-ion and makes its own contribution to the total molar conductivity of an electrolyte. The total limiting molar conductivity is the sum of individual contributions of the anions and cations.
Answer for screen readers
Kohlrausch's law of independent migration of ions states that at infinite dilution, each ion migrates independently of its co-ion and makes its own contribution to the total molar conductivity of an electrolyte. The total limiting molar conductivity is the sum of individual contributions of the anions and cations.
More Information
This law implies that in a solution with very low concentration, ions do not interact with each other, allowing measurement of their individual contributions to the molar conductivity.
Tips
A common mistake is to assume interactions between ions at infinite dilution; however, interactions are negligible at this point.
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