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#ionic conductivity

5 public questions tagged with this topic.

CHEMISTRY

What is the molar conductivity at infinite dilution for MgSO₄ if the ionic molar conductivities of Mg²⁺ and SO₄²

Given: What is the molar conductivity at infinite dilution for MgSO₄ if the ionic molar conductivities of Mg²⁺ and SO₄²⁻ are 106.0 S cm² mol⁻¹ and 160.0 S cm² mol⁻¹ respectively? These values define the system as per NCERT data. Formula: Kohlrausch’s law: Lambda_m⁰ = lambda_{Mg^{2+⁰ + lambda_{SO_4^{2-⁰. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Lambda_m⁰ = 106.0 + 160.0 = 266.0 S cm² mol^{-1 . Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.

Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Relevant Chemistry topic covering principles and examples as per NCERT.

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Genesis of Periodic Classification - Dobereiner Newlands Mendeleev

Which group 1 element has the highest ionic conductivity in its molten chloride form?

Ionic conductivity in molten salts increases with smaller cation size due to higher mobility. LiCl has the highest conductivity among Li, Na, K, and Cs chlorides.

Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Genesis of Periodic Classification - Dobereiner Newlands Mendeleev

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