Choice of phase equilibria for design calculations

The choice of the best method for deducing vapour-liquid and liquid-liquid equilibria for a given system will depend on three factors  

For the purpose of deciding which phase equilibrium method to use, it is convenient to classify components into the classes shown in Table 8.10. 

Complex non-polar molecules Dispersion forces CCI4, iCsHio 

Polar molecules Dipole moment dimethyl formamide, chloroethane 

Hydrogen bonding Hydrogen bonds alcohols, water 

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