Question

Molar ionic conductivities of a two-bivalent electrolytes $x^{2+}$ and $y^{2-}$ are $57$ and $73$ respectively. The molar conductivity of the solution formed by them 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

Answer: (A)

$x y \rightleftharpoons x^{2+}+y^{2-} \Lambda_{ m }^{\infty}=57+73=130\, Scm ^{2} \,mol ^{-1}$