Question

Why does Conductivity of ionic solutions increase with increase in concentration?

Answer 1

Both Kohlrausch's law and the Debye-Hückel-Onsager equation break down as the concentration of the electrolyte increases above a certain value. The reason for this is that as concentration increases the average distance between cation and anion decreases, so that there is more inter-ionic interaction. Whether this constitutes ion-association is a moot point. However, It has often been assumed that cation and anion interact to form an ion-pair. Thus the electrolyte is treated as if it were like a weak acid and a constant, K, can be derived for the equilibrium

http://en.wikipedia.org/wiki/Conductivity_(electrolytic)

Answer 2

Thank u

Answer 3

You're welcome