Practice question
Question
A conductivity cell with cell constant 0.6 cm⁻¹ shows a resistance of 200 Ω with a 0.03 M KCl solution. What is the molar conductivity?
Explanation
kappa = (cell constant/R) = (0.6/200) = 0.003 S cm⁻¹ . Lambdam = (kappa × 1000/c) = (0.003 × 1000/0.03) = 100 S cm² mol⁻¹ .