Given:
Cell constant, lA=0.88 cm−1Resistance, R=210 ohm
Specific conductance, κ=lA×1R
κ=0.88×1210=4.19×10−3ohm−1cm−1
Equivalent conductance is the conductivity of a solution containing 1 g-equivalent of the electrolyte.
Λeq=κ V
V is volume of solution containing 1 g−equiv
Normality of solution→N
N g−equiv of solute present in →1 L solution
1 g−equiv of solute present in →1N L solution
∴
Λeq=κN (when volume in litres)
Λeq=κ×1000N (when volume in cm3)
Λeq=4.19×10−3×10000.02
Λeq=209.5ohm−1cm2eq−1