The volume properties of the two-component system n-methylpyrrolidone - ethanol

doi:10.26565/2220-637X-2013-22-17

Alla P. Krasnopyorova V.N. Karazin Kharkiv National University
Galyna D. Yukhno V.N. Karazin Kharkiv National University
A. N. Lyapunov V.N. Karazin Kharkiv National University
E. P. Bezuglaya V.N. Karazin Kharkiv National University

DOI: https://doi.org/10.26565/2220-637X-2013-22-17

Keywords: density, two-component system, ethanol, N-methylpyrrolidone, excessive pseudomolar volumes

Abstract

The dependences of the density of a two-component system N-methylpyrrolidone (NMP) - ethanol (EtOH) on the composition and temperature have been examined. The former is found to be non-linear that indicates that the system is non-ideal. Proceeding from these experimental data the pseudomolar volumes and excessive pseudomolar volumes (V_M^E) have been calculated. Peculiarities of interparticle interactions in mixed solvents NMP - EtOH, in particular, the formation of associates NMP: 2 EtOH are discussed.

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