Question

Specific conductance of $0.1$M NaCl 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 defined as the conductivity of an electrolyte solution divided by the molar concentration of electrolyte.

Given,

Specific Conductance $\left(\kappa \right)=1.01\times {10}^{-2}oh{m}^{-1}c{m}^{-1}$

Molarity $\left(M\right)=0.1M$

We know the relation,

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

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