Thermodynamical investigations of some non-electrolytic ternary mixtures

Abstract

Molar excess volume, <img src="http://www.niscair.res.in/jinfo/Volumes.gif" alt="" border="0" />&nbsp;and molar excess enthalpies <em>H</em>^<em>E</em>_{<em>ijk&nbsp;</em>}of various nitrobenzene (i) + benzene (j) + toluene (k) nitrobenzene (i) + benzene (j) + <em>o</em>- xylene (k) and nitrobenzene (i) + benzene (j) +<em>p</em>-xylene (k) ternary mixtures have been measured as a function of composition at 298.15 K. The observed data have been analysed in terms of i) Graph theory, ii) Sanchez and Lacombe and iii) Flory's theories. The calculated <em>X</em>^<em>E</em>_{<em>ijk&nbsp;</em>}values (<em>X</em> = <em>V</em> or <em>H</em>) by Graph and Flory's theories compare well with their corresponding experimental values.