Chemistry - Electrochemistry Question with Solution | TestHub

Electrolytic conductivity (specific conductance) of a solution depends on the number of ions present per unit volume of the solution.

For the same electrolyte at a given temperature, the conductivity increases with an increase in concentration (molarity) because the number of ions per unit volume increases.

Calculating the molarity of each solution:

For the first solution, Molarity $=\frac{0.2}{250}\times 1000=0.8$ M

For the second solution, Molarity $=\frac{0.3}{600}\times 1000=0.5$ M

For the third solution, Molarity $=\frac{0.6}{1000}\times 1000=0.6$ M

For the fourth solution, Molarity $=\frac{0.8}{2000}\times 1000=0.4$ M

Since the first solution has the highest concentration, it contains the maximum number of ions per unit volume and thus exhibits the maximum electrolytic conductivity.

Answer: $0.2$ mole of solute is dissolve in $250$ mL solution