Study of Molecular Interaction in Binary Mixtures of N,N-Dimethylformamide with 2-Butanol and 2-Pentanol at Temperatures Between 298.15 K and 323.15 K

A study of viscosity for the binary mixtures of N,N-dimethylformamide with 2-butanol and 2-pentanol at atmospheric pressure and at temperatures between 298.15 K and 323.15 K have been measured over the entire range of composition. From these data, enthalpy of activation (∆H ), excess enthalpy of activation (∆H ), entropy of activation (∆ S ), excess entropy of activation (∆ S ) and interaction parameter (ɛ ) have been calculated. The Redlich-Kister polynomial equation was used for correlating all the results. The obtained data were compared with those available in literature. The behavior of alcohols and interactions between the components mixture was performed using different excess thermodynamic properties. A discussion of molecular interaction has been done between the components of the mixture.