Variation of conductance with concentration

Variation of conductance with concentration:
Both specific conductance & equivalent conductance ?eq. of a solution vary with concentration.
1- According to
a- For strong electrolytes: at concentration up to several eq.1l, specific conductance increases sharply with increase in concentration because the no. of ions / cm3 increases in proportion to the concentration
b- In contrast, for weak electrolytes, specific conductance at lower values in dilute solution and increase much more gradually. The increase can not be quite so large because of the changing partial ionization of the solute, and consequently the conductance does not go up so rapidly as in strong electrolytes.
2- According to ?eq.
?of both strong & weak electrolytes increases with dilution

The reason for this is that : the decrease in is more than compensated by the increase in the value of on dilution, and hence ? goes up.
The concentration dependence of the conductivity:
Electrolytes that are completely dissociated irrespective of their concentration, so called strong electrolyte, should show a linear dependence of the conductivity on conce.
However, this relationship is only approximately true even for dilute solution, as shown in fig.