Molar conductivity, Lm, is
defined by = k/c where c is the concentration Conductivity decreases but molar
conductivity increases with decrease in concentration It increases slowly with
decrease in concentration for strong electrolytes while the increase is very steep
for weak electrolytes in very dilute solutions Kohlrausch found that molar
conductivity at infinite dilution, for an electrolyte is sum of the contribution of the
Rationalised 2023-24
59
Electrochemistry
molar conductivity of the ions in which it dissociates