Chemical Equilibria in the Heterogeneous Region of Compositions of Acetic Acid–n-Butyl Alcohol–n-Butyl Acetate–Water System at 298.15 K and Atmospheric Pressure

A study is performed of the compositions of coexisting phases in a state of chemical equilibrium at a temperature of 298.15 K and atmospheric pressure. The object of study is an acetic acid–n-butyl alcohol–n-butyl acetate–water system. Esterification/hydrolysis is carried out using a catalyst (hydrochloric acid). All results are presented in the corresponding concentration spaces. For greater clarity of the resulting data, the compositions of chemically nonequilibrium phases are given in squares of the concentration α-variables. A comparative analysis is performed of the results. A correlation of experimental data using the NRTL model shows satisfactory agreement between the calculated compositions and experimental values.