Densities and Excess molar volumes for Binary Solution of Water + Propanol from (۲۸۳.۱۵ to ۳۱۳.۱۵) K

The thermodynamic properties of real solutions may be expressed in terms of the excess functions, XE, defined as the difference between the observed thermodynamic function of mixing and the function for an ideal solution. The excess volumes are defined as:VE = Volume of the solution – (volume of pure A + volume of pure B).Among the various thermodynamic properties, the excess volume, VE, has been of much interest for the practical purpose of determining composition from the density measurement. Density and excess molar volume are significant for the design of new processes and the study of molecular interactions in binary liquid systems. Excess volume could provide information on the possible interactions between components of a binary mixture, such as molecular associations and dipole-dipole and dipole-induced-dipole interactions. Furthermore excess volumes could indicate the deviation of a binary solution from the ideality.In this paper we have reported densities for binary solution of propanol with water over the whole composition range at temperatures from (۲۸۳.۱۵ to ۳۱۳.۱۵) K in ۱۰ K intervals and atmospheric pressure. From these data, the excess molar volumes (VE) and their standard deviation į (VE) were calculated.

کلیدواژه ها:

Density ، Excess volume ، Binary Solution ، Propanol