Chemistry - Electrochemistry Question with Solution | TestHub

Molar conductivity is given by the formula:

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

where $\kappa$ is the conductivity and $M$ is the molarity of the solution.

Rearranging the formula to solve for $\kappa$:

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

Substituting the given values ${\Lambda }_m=220{\Omega }^{-1}{\text{cm}}^2{\text{mol}}^{-1}$ and $M=0.8\text{M}$:

$\kappa =\frac{220\times 0.8}{1000}$

$\kappa =\frac{176}{1000}=0.176{\Omega }^{-1}{\text{cm}}^{-1}$

Answer: $0.176{\Omega }^{-1}{\text{cm}}^{-1}$