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Limiting molar conductivity by Kohlrausch's law, from ions or from other electrolytes

This type of question, asked 9 times: May 2022 S1, 3 May 2023 S2, 12 May 2024 S2, 13 May 2024 S2, 14 May 2024 S1, 25 Apr 2025 S2, 19 Apr 2026 S2, 14 May 2026 S1, 15 May 2026 S1. All 9 questions below, oldest first.

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  1. Question 1

    May 2022 S1

    95
    Calculate Λ0\Lambda^0 of CH2_2ClCOOH if Λ0\Lambda^0 for HCl, KCl and CH2_2ClCOOK are 4.2, 1.5 and 1.1 Ω−1\Omega^{-1} cm2^2 mol−1^{-1} respectively?

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  2. Question 2

    3 May 2023 S2

    78
    The limiting molar conductivities Λ0\Lambda^0 for NaCl, KBr and KCl are 126, 152 and 150 S cm² mol⁻¹ respectively. What is the Λ0\Lambda^0 of NaBr?

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  3. Question 3

    12 May 2024 S2

    80
    Which of the following expressions represents molar conductivity of AB3_3 type electrolyte?

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  4. Question 4

    13 May 2024 S2

    75
    Which from the following expression represents molar conductivity of an electrolyte A2B3\text{A}_2\text{B}_3 type?

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  5. Question 5

    14 May 2024 S1

    99
    Calculate molar conductivity of NH4OH\text{NH}_4\text{OH} at infinite dilution if molar conductivities of Ba(OH)2\text{Ba(OH)}_2, BaCl2\text{BaCl}_2 and NH4Cl\text{NH}_4\text{Cl} at infinite dilution are 520, 280, 129 Ω−1 cm2 mol−1520,\,280,\,129\,\Omega^{-1}\,\text{cm}^2\,\text{mol}^{-1} respectively.

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  6. Question 6

    25 Apr 2025 S2

    72
    What is molar conductivity at zero concentration in Ω−1 cm2 mol−1\Omega^{- 1}{\text{ }cm}^{2}{\text{ }mol}^{- 1} for aluminium sulphate, if molar ionic conductivities at zero concentration of Al+3Al^{+ 3} and SO4−2SO_{4}^{- 2} are 189Ω−1 cm2 mol−1189\Omega^{- 1}{\text{ }cm}^{2}{\text{ }mol}^{- 1} and 50.1Ω−1 cm2 mol−150.1\Omega^{- 1}{\text{ }cm}^{2}{\text{ }mol}^{- 1} respectively?

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  7. Question 7

    19 Apr 2026 S2

    29
    What is molar conductivity of CH3COOH\mathrm{CH_3COOH} at zero concentration if the molar conductivities of H2SO4\mathrm{H_2SO_4}, K2SO4\mathrm{K_2SO_4} and CH3COOK\mathrm{CH_3COOK} at zero concentrations are respectively x, y and z Ω−1cm2 mol−1\Omega^{-1}\mathrm{cm^2\,mol^{-1}} ?

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  8. Question 8

    14 May 2026 S1

    22
    The molar conductivity of HCl, CH3COONa\mathrm{CH_3COONa} and NaCl are 426.16 S cm2/mol426.16\ \mathrm{S\,cm^2/mol}, 91.0 S cm2/mol91.0\ \mathrm{S\,cm^2/mol} and 126.4 S cm2/mol126.4\ \mathrm{S\,cm^2/mol}. What would be the Λ0\Lambda_0 for CH3COOH\mathrm{CH_3COOH}?

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  9. Question 9

    15 May 2026 S1

    25
    Which of the following is the correct expression for molar conductivity of Na2SO4\mathrm{Na_2SO_4} at infinite dilution?

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