Question

Conductivity of an electrolytic solution depends on ___.

• A. Concentration of electrolyte
• B. Power of AC source
• C. Distance between the electrodes
• D. Nature of electrolyte

Answer 1

Answer: (A), (D)

Nature of electrolyte

Analysing the options

Option (A)

Nature of electrolyte-
There are two types of electrolytes-

1) Strong electrolyte

2) Weak electrolyte

Strong electrolytes get completely dissociated due to which the number of ions in solution are more, while for weak electrolyte, it is partially dissociated thus having lesser number of ions. Conductivity depends on the number of ions, thus more the number of ions, more is the conductivity.

Thus, Conductivity of strong electrolyte > Conductivity of weak electrolyte.

Hence, conductivity depends on the nature of the electrolyte.

Option (B)

Concentration of electrolyte
Conductivity $\propto$ concentration

As concentration of electrolyte increases, the number of ions in solution increases, due to which conductivity also increases.
Hence, conductivity depends on concentration of electrolyte.

Option (C)

Since conductivity is an indicator of how easily current passes through a solution, Hence, Conductivity is independent of power of AC source.

Option (D)

Conductivity is defined as conductance of 1 ml of solution provided distance between electrodes (l) is 1 cm and area of electrodes (A) is $1c{m}^2$.
Thus, conductivity is not dependent on distance between the electrodes.

Hence, the correct options are (A) & (B).