Question

Which of the following ion is expected to have highest value of molar conductivity at infinite dilution in the aqueous solution?

• A. $N{a}^{+}$
• B. $K^{+}$
• C. $C{a}^{2+}$
• D. $H^{+}$

Answer 1

Answer: (D)

Among the cations $H^{+}$ has the maximum conductivity due to Grothus conduction. Molar conductivity at infinite dilution in the aqueous solution is directly proportional to the ratio of charge and size of ions. $H^{+}$ ion is exceptionally having maximum molar conductivity at infinite dilution because of Grothus conduction mechanism in which $H^{+}$ ions transferred to nearest water molecules.