CBSE Class 12 · 2010 · Delhi · Redox Reactions and ElectrochemistryLong Answer

a) State Kohlrausch law of independent migration of ions. Write an expression for the molar conductivity of acetic acid at infinite dilution according to Kohlrausch law.
b) Calculate ${\Lambda }_m^{\circ }$(CH${}_3$COOH), given that ${\Lambda }_m^{\circ }$(HCl) = 426 S cm${}^2$ mol${}^{-1}$, ${\Lambda }_m^{\circ }$(NaCl) = 126 S cm${}^2$ mol${}^{-1}$, ${\Lambda }_m^{\circ }$(CH${}_3$COONa) = 91 S cm${}^2$ mol${}^{-1}$.