Q.
Indicate the correct statements:
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a
Conductivity cells have cell constant values independent of the solution filled into the cell
b
DC (direct current) is not used for measuring the resistance of a solution.
c
Kohlrausch law in valid both for strong and weak electrolytes.
d
The k decreases but λM and λE increase on dilution.
answer is A.
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Detailed Solution
Cell constant =ℓA=σκ=GσλM=1000KM,λN1000KNOn dilution G↓K↓M↓N↓ λM↑, λN↑
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