Solubility of freons in polar and non-polar liquids at 298.15 K

摘要

The cavity formation energy (CFE)is the free energy invested in rearrangement of the solvent molecules when a solute is inserted into a solvent,which is very important to the solubility studies.The CFE of liquid solvents;n-heptane,n-octane,cyclohexane,tetrachloromethane,benzene and water at 298.15 K has been determined.The solubility (in terms of Henry's law constant),Gibb's free energy of solution and DELTAG_s,the thermodynamical quantities for the solvation process defined by Ben-Nairn and Marcus of fluorine containing gases;freon-11,freon-12,freon-13,freon-14,freon-21,freon-c-318 and sulpherhexafluoride (SF_6)in above liquid solvents at 298.15 K also been calculated with this cavity formation energy.It yields good agreement with experimental results.The calculation shows importance of CFE in determining the solution properties.