The correct order of molar conductance at infinite dilution of LiCl, NaCl and KCl is — Electrochemistry Chemistry Question

💡 Solution & Explanation

At infinite dilution, molar conductance depends entirely on the ionic mobility. While $Li^+$ has the smallest crystallographic radius, it possesses the highest charge density and thus the largest hydrated radius in aqueous solution. Consequently, its mobility is the lowest. The mobility order is $K^+ > Na^+ > Li^+$. Therefore, the molar conductance order is KCl > NaCl > LiCl. Therefore, correct answer is B.