NEETChemistry-Electrochemistry

NEET Chemistry Molar Conductance MCQ Question

Type: MCQ-numerical-Medium-Class 12

The molar conductance of NaCl, HCl and CH₃COONa at infinite dilution are 126.45, 426.16 and 91.0 S cm² mol⁻¹ respectively. The molar conductance of CH₃COOH at infinite dilution is. Choose the right option for your answer.

A

540.48 S cm² mol⁻¹

B

201.28 S cm² mol⁻¹

C

390.71 S cm² mol⁻¹

D

698.28 S cm² mol⁻¹

Correct Answer

Option B

Detailed Explanation

The molar conductance of CH₃COOH can be calculated using the Kohlrausch's law of independent migration of ions: Λ∞(CH₃COOH) = Λ∞(HCl) + Λ∞(CH₃COONa) - Λ∞(NaCl).

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