NECESSARY AND SUFFICIENT CONDITIONS FOR REACTIVE AZEOTROPES IN MULTIREACTION MIXTURES

Necessary and sufficient conditions for azeotropy in reactive mixtures derived show that in the space of transformed compositions, they take the same functional form as the conditions for azeotropy in nonreacti ve mixtures. In general, reactive azeotropes do nor correspond to poin ts of equal mole fraction (or mass fraction) across the coexisting equ ilibrium phases. The relationship between stationary points in the equ ilibrium temperature or pressure surface and reactive azeotropes is al so considered, as well as their relevance to the Gibbs-Konovalov theor ems.