Question

Limiting molar ionic conductivities of a uni-univalent electrolyte are $57$ and $73$. The limiting molar conductivity of the solution will be:

• A. 130 S cm${}^2$ mol${}^{-1}$
• B. 65 S cm${}^2$ mol${}^{-1}$
• C. 260 S cm${}^2$ mol${}^{-1}$
• D. 187 S cm${}^2$ mol${}^{-1}$

Answer 1

The correct option is A 130 S cm${}^2$ mol${}^{-1}$

Limiting molar ionic conductivities of a uni-univalent electrolyte are 57 and 73.

The limiting molar conductivity of the solution will be 130 S $c{m}^{2}mo{l}^{-1}$

${\lambda }_M^o={\lambda }_a^o+{\lambda }_c^o=57+73=$$130Sc{m}^{2}mo{l}^{-1}$