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Specific conductivity (κ) of an electrolyte solution generally
Aincreases on dilution
Bdecreases on dilution
Cis unchanged on dilution
Dbecomes zero on dilution
Answer & Solution
Correct answer: B. decreases on dilution
1. Specific conductivity is conductance per unit volume.
2. On dilution the number of ions per unit volume falls, so κ decreases.
3. Molar conductivity (Λ_m), on the other hand, increases on dilution as inter-ionic effects weaken.
_Source: Maharashtra Balbharati Std XII Chemistry, Ch 5 "Electrochemistry" §5.9_
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