Calcualting limiting molar conductivity: Calculate the limiting molar conductivity of acetic acid at `298 K` Given that at that temperature the limiting molar conductivites infinit dilution of hydrochloric acid, sodium chloride and sodium acetate are `426, 126` and `91 S cm^92) mol^(-1)`.
Strategy: `A_(m)^(0)` for electroyles is obtained by using Kohlrausch law of independent migration of ions

Explanation

According to Kohlrausch's law
`Lambda_(m)^(0)(HAc) = lamda_(H+)^(0) + lamda_(Ac-)^(0)`
`Lambda_(m)^(0)(HCl) = lamda_(H+)^(0) + lamda_(Cl-)^(0)`
`Lambda_(m)^(0)(NaAc) = lamda_(Na+)^(0) + lamda_(Ac-)^(0)`
`Lambda_(m)^(0)(NaCl) = lamda_(Na+)^(0) + lamda_(Cl-)^(0)`
Thus
`Lambda_(m)^(0)(HAc) = Lambda_(m)^(0)(HCl) + Lambda_(m)^(0)(NaAc) - Lambda_(m)^(0)(NaCl)`
`(426 + 91 - 126)S cm^(2) mol^(-1)`
`391 S Cm^(2) mol^(-1)`