Question

Define Kohl Rausch's Law.


Don't copy from Google plz​

Answer 1

$\Large\color{darkblue}\underline{\underline{\sf KOHLRAUSCH \: LAW -}}$

At infinite dilution when dissociation of electrolyte is completed each ion make a definite contribution towards equivalent conductivity of any electrolyte at infinite dilution ${\sf \lambda_{eq}^{\infty}}$ of electrolyte irrespective of nature of other ion of associate with it.

This law states that the equivalent conductivity of any electrolyte at infinite dilution ${\sf (\lambda_{eq}^{\infty})}$ is the sum of equivalent ionic conductivities of the cation and anion given by the electrolyte at infinite dilution.

$\Large\color{violet}\underline{\boxed{\sf \lambda_{eq}^{\infty}=\lambda_{a}^{\infty}+\lambda_{c}^{\infty}}}$

Consider a salt NaCl , its Equivalent conductivity at infinite dilution is the sim of the two terms i.e.

${\sf \lambda_{eq}^{\infty}=\lambda_{Na^+}^{\infty}+\lambda_{Cl^-}^{\infty}}$

$\underline{\sf For\:A_xB_y\:type\: Solution-}$

$\large{\sf A_xB_y→xA^{y+}+yB^{x-} }$

${\sf \lambda_{M_{A_xB_y}}^{\infty}=x×\lambda_{M_{A^{+y}}}^{\infty}+y×\lambda_{M_{B^{-x}}}^{\infty}}$

Answer 2

Hello dear,

Your answer is in the attached image dear.