Question

Which of the following statements is correct with respect to electrolytic solutions?

(a) Its conductance increases with dilution

(b) Its conductance decreases with dilution

(c) Its conductivity increases with dilution

(d) Its equivalent conductance decreases with dilution

This question was posed to me in a national level competition.

Enquiry is from Conductance of Electrolytic Solutions topic in portion Electrochemistry of Chemistry – Class 12

Answer 1

Correct option is (a) Its conductance increases with dilution

The best I can explain: Conductance is dependent on the concentration of the electrolytic solution. It is also inversely proportional to the conductivity of the solution. On dilution, the number of ions per unit volume reduces, decreasing conductivity and increasing the conductance. The equivalent conductance increases on dilution ionic mobility increases on dilution.