Kohlrausch's Law
According to Kohlrausch's law, the molar conductivity at infinite dilution for a salt can be calculated from:
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About This Question
- Subject
- chemistry
- Chapter
- redox reactions and electrochemistry
- Topic
- kohlrausch's law
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Sum of molar conductivities of ions
Kohlrausch's Law of Independent Migration of Ions states that at infinite dilution, where dissociation is complete, each ion makes a definite contribution to the total molar conductivity, regardless of the nature of the other ion.
- Formula: Λm∘=ν+λ+∘+ν−λ−∘
- λ+∘,λ−∘ are limiting molar conductivities of cations and anions.
- ν+,ν− are the number of cations and anions produced by one formula unit of the salt.
- Therefore, the total molar conductivity is the sum of the individual ionic conductivities.
This easy difficulty chemistry question is from the chapter redox reactions and electrochemistry, covering the topic of kohlrausch's law. It appeared in the 2025 exam.
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