The equivalent conductance at infinite dilution ( ^0 ) for electr… - Vidyadip

MCQ

The equivalent conductance at infinite dilution $\left( {{ \wedge ^0}} \right)$ for electrolytes $BA$ and $CA$ are $140$ and $120\ S\ cm^2 eq^{-1}$. The equivalent conductance at infinite dilution for $BX$ is $198\ S \ cm^2 eq^{-1}$. The ${ \wedge ^0}$ (in $S\ cm^2 eq^{-1}$) of $CX$ is

✓
$178$
B
$198$
C
$218$
D
$130$

✓

Answer

Correct option: A.

$178$

a
$\wedge_{\mathrm{CX}}^{o}=\wedge_{\mathrm{CA}}^{o}+\wedge_{\mathrm{BX}}^{o}-\wedge_{\mathrm{BA}}^{o}$

$=120+198-140$

$=178\, \mathrm{S}\, \mathrm{cm}^{2} \mathrm{eq}^{-1}$

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