Molar Conductivity
| Formula / Notation | Λm = κ/c; molar conductivity decreases with √c (Kohlrausch law) |
|---|---|
| Also Known As | Equivalent conductance (older term), molar conductance, Λm |
What is Molar Conductivity?
The conductivity of a solution containing one mole of electrolyte per liter, measured in S·cm²/mol. Molar conductivity increases with dilution for weak electrolytes (as more dissociation occurs) and approaches a limiting value (Λₘ°) for strong electrolytes at infinite dilution.
Formula & Notation
Other Names / Synonyms: Equivalent conductance (older term), molar conductance, Λm
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The conductivity of a solution containing one mole of electrolyte per liter, measured in S·cm²/mol. Molar conductivity increases with dilution for weak electrolytes (as more dissociation occurs) and approaches a limiting value (Λₘ°) for strong electrolytes at infinite dilution.
Molar conductivity is used in: studying electrolyte dissociation (distinguishing strong from weak electrolytes), calculating degree of dissociation and dissociation constants (Ka, Kb), measuring purity of water (conductivity), monitoring industrial electrolyte processes, and in analytical conductome…
No direct safety concern for the concept. High molar conductivity solutions indicate high ion concentrations, which may be corrosive (high [H⁺] in strong acid solutions, high [OH⁻] in strong base solutions). Always check pH before handling high-conductivity solutions.
The formula or notation for Molar Conductivity is: Λm = κ/c; molar conductivity decreases with √c (Kohlrausch law)