Related Experiment Videos
Solubility in binary solvent systems: 8. Estimation of binary alkane plus p-dioxane solvent nonideality from measured
A D Procyk1, M Bissell, K W Street
1Department of Chemistry, Kent State University, OH 44242, USA.
Journal of Pharmaceutical Sciences
|August 1, 1987
Summary
Solubility of anthracene was measured in p-dioxane and various alkane mixtures at 25°C. The nearly ideal binary solvent (NIBS) model was used to estimate excess Gibbs free energies, showing good agreement with prior studies.
Area of Science:
- Physical Chemistry
- Thermodynamics
- Solubility Studies
Background:
- Understanding solute solubility in mixed solvents is crucial for chemical processes.
- Anthracene is a polycyclic aromatic hydrocarbon with applications in materials science.
- Binary solvent mixtures offer tunable properties for dissolution and reaction.
Purpose of the Study:
- To experimentally determine anthracene solubility in p-dioxane/alkane binary mixtures.
- To estimate excess Gibbs free energies of mixing using the nearly ideal binary solvent (NIBS) model.
- To validate model predictions against existing experimental data.
Main Methods:
- Solubility measurements of anthracene at 25°C in seven binary solvent systems.
- Application of the NIBS model to solubility data.
- Comparison of estimated excess Gibbs free energies with published values.
Main Results:
- Experimental solubility data for anthracene in p-dioxane/alkane mixtures were obtained.
- Excess Gibbs free energies of mixing were successfully estimated using the NIBS model.
- Estimated values for specific mixtures showed reasonable agreement with literature data derived from vapor pressure measurements.
Conclusions:
- The NIBS model provides a reliable method for estimating thermodynamic properties in binary solvent mixtures.
- Experimental solubility data are essential for validating thermodynamic models.
- The study contributes to the understanding of anthracene's behavior in mixed solvent systems.