Question

The specific conductance of a $0.20mol{L}^{-1}$
solution of an electrolyte at ${20}^{0}Cis2.48\times {10}^{-4}oh{m}^{-1}c{m}^{-1}$. The molar conductivity of the solution is :

• A. $1.24oh{m}^{-1}c{m}^{2}mo{l}^{-1}$
  
• B. $4.96oh{m}^{-1}c{m}^{2}mo{l}^{-1}$
  
• C. $0.24oh{m}^{-1}c{m}^{2}mo{l}^{-1}$
  
• D. $0.49oh{m}^{-1}c{m}^{2}mo{l}^{-1}$

Answer 1

The correct option is A $1.24oh{m}^{-1}c{m}^{2}mo{l}^{-1}$


${\lambda }_m=\frac{K\times 1000}{M}\Rightarrow \frac{2.48\times {10}^{-4}\times 1000}{0.20}=1.24oh{m}^{-1}c{m}^{2}mo{l}^{-1}$