Ultrasonic velocity, viscosity and excess properties of binary mixture of tetrahydrofuran with 1-propanol and 2-propanol

Ultrasonic velocity U and viscosity η have been measured for the binary mixture of tetrahydrofuran with 1-propanol and 2-propanol at T = 293 K, 303 K and 313 K over the entire composition range. Using these experimental data and previously reported values of density ρ, excess adiabatic compressibility β s E , excess viscosity Δη, excess energy of activation ΔG*E and excess internal pressure π i E have been evaluated. All these excess parameters were plotted against the mole fraction of tetrahydrofuran over the whole composition range. The strength and the nature of the interactions between like and unlike molecules have been discussed.