Read the passage carefully and answer the questions.

Electrochemistry is the study involving two types of processes. One type involves the production of electricity from the energy released during a spontaneous chemical reaction. Galvanic cells like Daniel cells are used to produce electricity from the redox reaction. Nernst equation of a galvanic cell gives the relation between the standard cell potential and the concentration of the species involved in the redox reaction. The second type of study involves the cells in which electrical energy is used to bring about the chemical reactions in a non-spontaneous process. The conductance of electrolytic solution depends on many factors including the nature of the electrolyte and the dimensions of the electrolytic cell.

The conductivity of ionic electrolytic solutions does not depend on:

Pressure.

The correct answer is Option (4) → Pressure.

The conductivity of an ionic electrolytic solution depends primarily on the mobility and number of ions in the solution.

• Concentration: Directly affects the number of ions available to carry the current.
• Viscosity of solvent: Affects the resistance to the movement of ions, thus affecting their mobility.
• Solvation of ion: Affects the effective size of the ion (hydrated radius), which in turn affects its mobility.
• Pressure: For liquid solutions, a change in external pressure (unless extreme) has a negligible effect on the concentration, viscosity, or ion mobility, and therefore does not significantly affect conductivity.