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Question
Why does the conductivity of a solution decrease with dilution?
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Solution
The conductivity of a solution is the conductivity of the ions present in a unit volume of the solution. On dilution, the number of ions per unit volume decreases. Hence, the conductivity also decreases.
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RELATED QUESTIONS
Resistance of conductivity cell filled with 0.1 M KCl solution is 100 ohms. If the resistance of the same cell when filled with 0.02 M KCl solution is 520 ohms, calculate the conductivity and molar conductivity of 0.02 M KCl solution. [Given: Conductivity of 0.1 M KCl solution is 1.29 S m-1 .]
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| 1. | 1.00 | 111.3 × 10−3 | 111.3 |
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| 3. | 0.01 | 1.41 × 10−3 | 141.0 |
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OR
(c) Amit a classmate of Rahul repeated the same experiment with CH3COOH solution instead of KCl solution. Give one point that would be similar and one that would be different in his observations as compared to Rahul. (2)
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