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Chemistry class 12th Limiting_Molar_Conductivity_298K.

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Limiting molar conductivity (Λ₀) at 298 K is the molar conductivity of an electrolyte at infinite dilution, where ion interactions are negligible. It is determined using Kohlrausch’s Law, which states that Λ₀ is the sum of the individual ion conductivities. For strong electrolytes, Λ₀ is obtained by extrapolating conductivity measurements, while for weak electrolytes, it is calculated using the Ostwald dilution law. Λ₀ is crucial in electrochemistry for understanding ion transport, dissociation, and reaction kinetics. It helps in determining ion mobility, solvation effects, and the degree of dissociation, influencing applications like battery design and industrial electrolytic processes.

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Ion Symbol Limiting Molar Conductivity (S cm² mol■¹)

Hydrogen ion H+ 349.8
Hydroxide ion OH- 198.5
Sodium ion Na+ 50.1
Potassium ion K+ 73.5
Lithium ion Li+ 38.7
Calcium ion Ca2+ 119.0
Magnesium ion Mg2+ 106.0
Chloride ion Cl- 76.3
Bromide ion Br- 78.1
Iodide ion I- 76.8
Nitrate ion NO3- 71.5
Sulfate ion SO4 2- 160.0
Acetate ion CH3COO- 40.9
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