Fatemeh Ebrahimi - Faculty of Chemistry, Bu-Ali Sina University, Hamedan ۶۵۱۷۸, Iran
Jalal Basiri Parsa - Faculty of Chemistry, Bu-Ali Sina University, Hamedan ۶۵۱۷۸, Iran

Density, viscosity and refractive indices (n(D ) of binary system of 2-butanol +2-pentanolhave been studied at 298.15 K and atmospheric pressure. From the experimental data, theexcess molar volumes (V(E) ), viscosity deviation (Δ ƞ ), absolute synergies of refractive indexdeviation (Δ n(D) and excess Gibbs free energy of activation (Δ G(*E ) have been calculated.These results have been correlated as a function of mole fraction with the Redlich-Kisterequation for the binary mixture.

Thermodynamic; Excess properties;Binary; 2-butanol; 2-pentanol