Question

Specific conductance of $0.1MNaCl$ solution is $1.01\times {10}^{-2}oh{m}^{-1}c{m}^{-1}$. Its molar conductance in $oh{m}^{-1}c{m}^{2}mo{l}^{-1}$ is :

• A. $1.01\times {10}^2$
• B. $1.01\times {10}^3$
• C. $1.01\times {10}^4$
• D. $1.01$

Answer 1

The correct option is A $1.01\times {10}^2$

Molar conductivity is the conductance of an ionic solution containing $1mol$ of electrolyte between the two electrodes at a given concentration.
Molar conductivity denoted by the symbol, ${\Lambda }_m.$

Given,
$\text{Specific Conductace,}\left(k\right)=1.01\times {10}^{-2}oh{m}^{-1}c{m}^{-1}$
$\text{Molarity,}\left(M\right)=0.1M$

We know the relation,

${\Lambda }_m=\frac{k\times 1000}{M}$

$=\frac{1.01\times {10}^{-2}\times 1000}{0.1}=1.01\times {10}^{2}oh{m}^{-1}c{m}^{2}mo{l}^{-1}$