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What does Λ°m represent for weak electrolytes?

Options

  1. AMolar concentration at zero dilution
  2. BLimiting molar conductivity at high concentrations
  3. CLimiting molar conductivity at infinite dilution
  4. DMolar conductivity at maximum concentration

Correct answer

C. Limiting molar conductivity at infinite dilution

Step-by-step solution

At infinite dilution (i.e., concentration c → zero) electrolyte dissociates completely, but at such low concentration the conductivity of the solution is so low that it cannot be measured accurately. Therefore, ⋀° m for weak electrolytes is obtained by using Kohlrausch's law of independent migration of ions.

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