Question

Electrolytic conductivity of $0.3M$ solution of $KCI$ at $298K$is $3.72$ x ${10}^{-2}Sc{m}^{-1}$.Calculate its molar conductivity ($Sc{m}^{2}mo{l}^{-1}$)

• A. $124$
• B. $30.56$
• C. $192$
• D. $185$

Answer 1

The correct option is A $124$

Given,

$k=3.72\times {10}^{-2}Sc{m}^{-1}$

$c=0.3M$

Molar conductivity($m$) is given by,

$m=\frac{k\times 1000}{c}$

$\Rightarrow m=\frac{3.72\times {10}^{-2}\times 1000}{0.3}$

$\Rightarrow m=124Sc{m}^{2}mo{l}^{-1}$