0.1 M solution of an electrolyte A + B − placed in a conductivity cell with electrodes 4 cm apart and each with cross-section area equal to 2 cm 2 was found to have a resistance of 200 Ω . What is mol

Question

0.1 M solution of an electrolyte A + B − placed in a conductivity cell with electrodes 4 cm apart and each with cross-section area equal to 2 cm 2 was found to have a resistance of 200 Ω . What is molar conductivity of the solution?

TestHub · Accepted Answer

Cell constant G ∗ = A l ​ G ∗ = 2 4 ​ = 2 cm − 1 Conductivity κ = R 1 ​ × G ∗ κ = 200 1 ​ × 2 = 0.01 Ω − 1 cm − 1 Molar conductivity Λ m ​ = C κ × 1000 ​ Λ m ​ = 0.1 0.01 × 1000 ​ = 100 Ω − 1 cm 2 mol − 1 Answer: 100 Ω − 1 cm 2

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