Practice question

MCQ

Question

The molar conductivity of NaCl at infinite dilution is 126.4 S cm² mol⁻¹. If λ°Na⁺ = 50.1 S cm² mol⁻¹ , what is λ°Cl⁻ ?

Options

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76.3 S cm² mol⁻¹ Correct 50.1 S cm² mol⁻¹ 126.4 S cm² mol⁻¹ 26.3 S cm² mol⁻¹

Explanation

Lambdam° = λ°Na⁺ + λ°Cl⁻ . 126.4 = 50.1 + λ°Cl⁻ , λ°Cl⁻ = 76.3 S cm² mol⁻¹ .

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