Seeking advice on the Txy diagram for benzene/toluene
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At 360K, with points A and B lying on a straight line, it can be understood that at this temperature and under 1 atm pressure, adding 70% benzene and 30% toluene will result in everything being in liquid form. Adding 85% benzene and 15% toluene will turn everything into a gas, is that correct?
It was written wrong above; it should be points A and C
Further inquiry: A vertical line is drawn at position 0.7 of the lower axis, with points A and B. Can it be understood that all the points vertically below point A are in the liquid phase, with nothing in the gas phase? A gas phase and a liquid phase mix only between A and B; beyond point B, it is entirely gas phase with no liquid phase. I just can’t understand whether the gas phase means there’s nothing there
saturated, saturated. It’s not completely free of gas.
At 1 atm and 360 K, the liquid phase composition is 70% benzene, while the corresponding gas phase composition is 85% benzene. It has nothing to do with joining.
It is recommended to understand the principles of chemical engineering more thoroughly. The txy diagram shows the thermal state corresponding to a certain temperature and composition; it is also possible to determine the temperature from the composition and thermal state, or to determine the composition from the temperature and thermal state – all of these are feasible.
It should be a relationship of ≥ and ≤: everything above the dew point line is in gaseous state, everything below the bubble point line is in liquid state; it’s not necessarily the case on the line itself. The composition of each phase is determined solely by the equilibrium temperature, and is independent of the overall composition