Question

At infinite dilution, the molar conductance of $B{a}^{2+}$ and $C{l}^{-}$ are $127$and $76Sc{m}^{2}mo{l}^{-1}$. What is the molar conductivity ${\text{in S cm}}^2{\text{mol}}^{-1}$ of $BaC{l}_2$, at indefinite dilution?

• A. 279
• B. 279.0
• C. 279.00
• D. 279

Answer 1

Answer: (A), (B), (C), (D)

${\wedge }_{BaC{l}_2}^{\infty }={\lambda }_{B{a}^{2+}}^{\infty }+2{\lambda }_{C{l}^{-}}^{\infty }$

$=127+2\times 76=279Sc{m}^{2}mo{l}^{-1}$