Abstract
Excess volumes (VE) and excess isentropic compressibilities (κEѕ) have been determined at 303.15K for the binary systems of p-xylene with 1-propanol, 1-butanol and 1-pentanol. Excess volumes exhibit an inversion sign for all binary systems. Further, isentropic compressibilities (κѕ) were also computed for the same 1-alkanols from precise speed of sound and density data. The excess isentropic compressibilities (κEѕ) from ideal behavior were also computed and the data were negative in all the binary systems. The calculated excess functions were correlated with Redlich–Kister and Hwang polynomial equations and the experimental speed of sound data have been analyzed in terms of free length theory (FLT) and collision factor theory (CFT). The results were discussed in terms of intermolecular interactions between component molecules with the help of FT-IR spectral studies.
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