JEE Main 2024 — Electrochemistry Question with Solution
From: JEE Main 2024 (Online) 6th April Morning Shift
Question
A conductivity cell with two electrodes (dark side) are half filled with infinitely dilute aqueous solution of a weak electrolyte. If volume is doubled by adding more water at constant temperature, the molar conductivity of the cell will -

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Show full solutionCorrect option: D
Step-by-step explanation
The molar conductivity, denoted as , is calculated using the formula:
When the volume of the solution is doubled by adding more water at a constant temperature, the conductivity, , will be reduced to half, while the molarity, , will also be halved.
Therefore, the molar conductivity will either remain the same or cannot be measured with sharp accuracy.
For an infinitely dilute solution, the molar conductivity is approximately equal to the molar conductivity at infinite dilution , which is a constant.
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