Indices for separation of multicomponent systems between two regions

6 Indices for separation of multicomponent systems between two regions 

In Section 1.2, we introduced a brief description of separation for multicomponent systems. Although we learnt there that perfect separation in such a system requires as many regions as there are components, we will restrict ourselves here to separation systems with only two regions in a closed vessel. Thus perfect separation is, in general, ruled out from our considerations. 

The familiar quantities used to define the composition of a mixture in a region have to be redefined since i = 1, 2, 3. n for the n-component system  

The distances MA, MB and MC represent weight percentages of species 1, 2 and 3, respectively, in the mbtture. The sum of the distances MA, MB and MC is equal to the altitude of the triangle. Since the perpendicular distance from any one of the apexes to the opposing base is the same for an equilateral triangle, this distance represents 100 percent of the mixture. Therefore the weight fractions of species 1, 2 and 3 in the mixture are given by 

AU other basic definitions of concentrations remain the same, except for i = 1,. .., n. For multicomponent systems, it is worthwhile illustrating the value of ay by way of an example. Consider an isotopic mixture of water having H2O, D2O and HDO present in the amounts 0.6, 0.1, 

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