Solid-liquid phase equilibria studies were used to investigate possible compolllld formation in solutions of (i) para-xylene, (ii) mesitylene, and (iii) N,N-dimethyl-formamide (DMF) with mono- and di- halobenzenes that were selected to give a wide range of acceptor properties. Solid 1:1 intermolecular compounds were identified from solutions of p-C_6H_4F_2 with mesitylene, p-C_6H_4Br_2 with p-xylene, and p-C_6H_4Cl_2 with p-xylene. The results suggest that compound formation occurs because of favorable geometry rather than a charge transfer process. A vibrating tube densimeter was used to determine, with high precision, the densities and subsequently excess volumes of mixing of the n-hexane plus cyclohexane system. Temperature dependence of excess volume of mixing for the system was established. Thermodynamic calculations were also performed to determine activities of the components of the n-hexane + cyclohexane system.
College and Department
Physical and Mathematical Sciences; Chemistry and Biochemistry
BYU ScholarsArchive Citation
Moellmer, John F., "Solid-liquid phase equilibria in systems of (i) para-xylene, (ii) mesitylene, and (iii) N,N-dimethylformamide ; Excess volume determination in systems containing cyclohexane ; Calculations of activities for the n-hexane + cyclohexane system" (1976). Theses and Dissertations. 8309.
Phase rule and equilibrium