Question

The electrolytic conductance is a direct measure of
A) Resistance
B) Potential
C) Concentration
D) Dissociation

Answer 1

The conductance of is the ability of the conductor to conduct electric current through it. Hence the electrolytic conductance is the ability of the electrolytic conductor (electrolyte) to conduct. Here we will discuss the electrolytic conductor and its conductance and find the answer for the given question.

Complete answer:
Electrolyte is a type of conductor in which flow of current is due to movement of ions. The electrolyte can conduct only when they are either in molten state or aqueous state. Electrolytic conductance is the ability of the electrolytic solution to conduct electricity. Electrolytic solutions dissociate into positive ions called cations and negative ions called anions on heating or raising the temperature and hence conduct electricity.
So we can say that the electrolytic conductance is a direct measure of dissociation, as due to dissociation of ions there is flow of current.

Hence the correct answer is option D.

Additional information:
Conductance of a conductor depends on its length and the cross sectional area. The SI unit of conductance is Siemens or mho. As it is reciprocal of resistance it can be given as ratio of current to the potential.

Note:
The electrolytic conductance depends on the concentration of solution as higher the concentration, more ions will be there and so more conductance but conductance won’t take place without dissociation of ions, therefore it is a direct measure of dissociation and not concentration.