Question

When the specific conductivity of a weak electrolyte is plotted on y-axis of the graph and the concentration along the x-axis, the graph shows:

• A. steady increase in conductivity with concentration.
• B. the conductivity rising to a maximum, then remaining constant as concentration increases.
• C. a decrease in conductivity with concentration.
• D. none of these

Answer 1

The correct option is B the conductivity rising to a maximum, then remaining constant as concentration increases.

As the concentration decreases or dilution increases, the specific conductance of a solution falls with dilution, as the number of current-carrying particles present per unit volume of the solution becomes less and less on dilution.

Thus, when the concentration increases, the conductivity rises to a maximum and reaches a limiting value and then, it remains constant.