The conductivity of an ionic solution depends on:
A. The nature of the electrolyte added
B. The Volume of the container
C. The size of the ions and their solvation
D. Pressure
E. Concentration of the electrolytes
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → A, C and E only
The conductivity of an ionic solution is decided by how many ions are present and how fast they move.
A. The nature of the electrolyte added — True. A strong electrolyte gives far more ions than a weak one at the same concentration.
B. The volume of the container — False. Conductivity is a property of the solution (per unit length and cross-section); the size of the vessel does not change it.
C. The size of the ions and their solvation — True. Large or heavily hydrated ions move more slowly and carry less current.
D. Pressure — False. Pressure is not one of the factors; liquids are nearly incompressible and the ion count does not change with it.
E. Concentration of the electrolytes — True. The number of ions per unit volume depends on the concentration.
NCERT (2026-27 edition):
Conductance of Electrolytic Solutions – “… The conductivity of electrolytic (ionic) solutions depends on: (i) the nature of the electrolyte added (ii) size of the ions produced and their solvation (iii) the nature of the solvent and its viscosity (iv) concentration of the electrolyte (v) temperature (it increases with the increase of temperature).”