How to read the Txy phase diagram for binary systems
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I need help with a question; please assist me. A single sentence gave me the answer I had been struggling to find for days. For the Txy diagrams of toluene and benzene, the curve represents the saturated liquid line, with the value shown indicating the mole fraction x of benzene in the liquid. Does it refer to benzene in the liquid divided by the total moles of all benzene compounds, or rather benzene in the liquid divided by the total moles of benzene and toluene together in the liquid? Why do the x.y values increase as the temperature rises? Why are the x.y values on the far left side of the graph all 0? Does that mean there is no benzene in either the vapor or liquid phase? The far right side is also all 1s
Question 1: Refers to the proportion of benzene in the entire liquid phase. Question 2: If the benzene composition in the liquid phase is 0, can you expect benzene to be present in the equilibrium vapor phase? It must also be 0.