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Electrochemistry
Conductance of Electrolytic Solutions – Cell Constant
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Concepts tested
- cell constant = conductivity × resistance
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2023 1 question
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The conductivity of centimolar solution of KCl at $25^\circ C$ is $0.0210\ ohm^{-1}cm^{-1}$ and the resistance of the cell containing the solution at $25^\circ C$ is 60 ohm. The value of cell constant is:
Cell constant $=\text{conductivity}\times\text{resistance}=0.0210\times60=1.26\ cm^{-1}$.
Conductivity = Conductance × Cell constant Conductivity = (1/resistance) × Cell constant Cell constant = Conductivity × Resistance Cell constant $=0.0210\times60=1.26\ cm^{-1}$
