40 lever rule phase diagram
The Lever Rule | PNG 520: Phase Behavior of Natural Gas and Condensate Fluids The Lever Rule Print P-x and T-x diagrams are quite useful, in that information about the compositions and relative amounts of the two phases can be easily extracted. If an alloy consists of more than one phase, the amount of each phase present can be found by applying the lever rule to the phase diagram. The lever rule can be explained by considering a simple balance. The composition of the alloy is represented by the fulcrum, and the compositions of the two phases by the ends of a bar. The lever rule is based precisely on the connecting line, and the distances between X B L , X B and X B V . Mathematical deduction The global mole fraction of B is equal to: X B = n B / ( n L + n V ) Where n B are the total moles of B in both the liquid and vapor phases, and n L and n V are the respective moles for these phases. Lever rule phase diagram