Electrochemistry — Important Questions

It increases with increase in temperature, It depends on the nature of the electrolyte, It is due to movement of ions

Electrolytic conductivity increases with temperature as ions move faster, depends on the electrolyte type, and is caused by ion movement. Conductivity actually increases with concentration (up to a point) and is affected by solvent viscosity.

Nature of the electrolyte, Size of ions and their solvation, Concentration of the electrolyte, Nature of the solvent

Conductivity depends on the type of electrolyte, ion size and solvation (which affects mobility), concentration of ions, and solvent properties like viscosity. The color of the solution does not affect conductivity.

S cm² mol⁻¹

Molar conductivity (Λm) has units of S cm² mol⁻¹ (siemens square centimeter per mole). It is calculated as κ/c, where κ has units S cm⁻¹ and c has units mol cm⁻³, giving the result in S cm² mol⁻¹.

Sum of individual ionic conductivities

Kohlrausch's law states that the limiting molar conductivity (at infinite dilution) of an electrolyte is the sum of the limiting molar conductivities of its constituent ions: Λ°m = λ°+ + λ°-