Thermodynamic Studies on Silver and Thallium Nitrate

Abstract

The molar conductivities (Λ) of aqueous solutions of silver nitrate and thallium nitrate were measured in the temperature range from 291.15 K to 314.15 K.The Λ values were analyzed using the Lee-Wheaton model, and the limiting molar conductivities (Λ o ) as well as the association equilibrium constants (K A ) were derived. The center-to-center distances (α) of the formed ion pairs were considered to be equal to the Bjerrum's distance. The limiting ion conductivities (λ ± ) were determined. The thermodynamic functions, Gibbs energy ( G A ), enthalpy ( H A ), and entropy ( S A ) for the ion-pair formation process were determined as well. The results are discussed in terms of ion-ion and ion-solvent interactions.