The Experimental Determination of LLE

If we place samples of two pure hquid species that do not react chemically in a container, shake them to bring them to equilibrium, and then observe the result, there are three possibilities  

The two liquids may be totally miscible, forming one liquid phase, for example, water and ethanol. 

The two liquids may be practically immiscible, forming two liqmds phases, each of which contains only a small amount (e.g., less than 1 mol%) of the other, for example, water and most organic compounds ( water and oil don t mix ). 

The two Uquids are partly miscible with each other, forming two separate phases, each of which contains 

Physical and Chemical Equilibrium for Chemical Engineers, Second Edition. Noel de Neveis. 2012 John Wiley Sons, Inc. Published 2012 by John Wiley Sons, Inc. 

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