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MCQEasyJEE 2024Electrolytic Conductance & Kohlrausch's Law

JEE Chemistry 2024 Question with Solution

Identify the factor from the following that does not affect electrolytic conductance of a solution:

  • A

    The nature of the electrolyte added

  • B

    The nature of the electrode used

  • C

    Concentration of the electrolyte

  • D

    The nature of solvent used

Answer

Correct answer:B

Step-by-step solution

Standard Method

Given: We must identify the factor that does not affect electrolytic conductance of a solution.

Find: The correct option.

Electrolytic conductance depends on factors related to the ions present in solution and their mobility. The nature of the electrolyte added affects conductance because strong and weak electrolytes ionize differently. The concentration of the electrolyte affects the number of ions present in solution. The nature of the solvent used affects ionization and mobility of ions.

The nature of the electrode used may affect electrode reactions, but it does not directly affect the conductance of the solution itself.

Therefore, the factor that does not affect electrolytic conductance of a solution is the nature of the electrode used.

The correct option is B.

Direct Concept Check

Given: Conductance of a solution is being discussed.

Find: Which listed factor is unrelated to solution conductance.

Conductance is a property of the solution, so think about what changes ion formation or ion movement in the solution: electrolyte type, electrolyte concentration, and solvent nature all matter. Electrode material belongs to the cell hardware, not the solution conductance.

Therefore, the correct option is B.

Common mistakes

  • Confusing conductance of the solution with electrode reaction kinetics. Electrode material can influence the rate of electrode processes, but not the intrinsic electrolytic conductance of the solution. Focus on ion concentration and ion mobility in the solution.

  • Assuming every component of an electrolytic cell affects conductance equally. Conductance depends mainly on the electrolyte and solvent properties, not on the material of the electrodes. Separate solution properties from electrode properties.

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