RE-NEET 2026 Chemistry Molar Conductivity MCQ Question
For a salt XY, which is a strong electrolyte, the plot of Λₘ versus √C has a slope o.0 S cm² mol⁻³/² L¹/² at 298 K. At 0.01 M concentration of XY, the value of Λₘ is 145.0 S cm² mol⁻¹. The limiting molar conductivity of Y⁻ ion (Λ⁰ᵧ⁻, in S cm² mol⁻¹) at 298 K will be
(Given: Λ⁰ₓ⁺ = 74.0 S cm² mol⁻¹)
100.0
90.0
76.0
80.0
Correct Answer
Detailed Explanation
Using the equation Λₘ = Λ⁰ - k√C, where Λ⁰ = Λ⁰ₓ⁺ + Λ⁰ᵧ⁻, we can solve for Λ⁰ᵧ⁻. Given Λₘ = 145.0, Λ⁰ₓ⁺ = 74.0, and slope = -90.0, we find Λ⁰ᵧ⁻ = 100.0 S cm² mol⁻¹.
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