Question

Which of the following solution will have highest specific conductance?

• A. $0.01$M $C{H}_{3}COOH$
• B. $0.01$M $N{H}_{4}OH$
• C. $0.01$M NaCl
• D. $0.01$M $K_{2}S{O}_4$

Answer 1

The correct option is D $0.01$M $K_{2}S{O}_4$

Here, the concentration is the same for all the electrolytes mentioned here.

In $K_{2}S{O}_4$, the number of ions per unit volume that carry the current in a solution increases on dilution, as it dissociates into 2 cations $K^{+}$ and 1 anion $S{O}_4^{2-}$, rest dissociates to 1 cation and 1 anionic species.

Hence the specific conductance of $0.01M{K}_{2}S{O}_4$ is highest.