An alternative method, particularly useful for the separation of multicomponent mixtures of hydrocarbons, is to use the simple relation = KxA. K values have been measured for a wide range of hydrocarbons at various pressures, and some values are shown in Figure 11.39.

some progress has been made in presenting methods for calculating ternary data from known data for the binary mixtures, though as yet no entirely satisfactory method is available.

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