(3) Answer the following questions using the pyridine/acetic acid (HAc) two-component phase diagram shown below: (a) At what temperature will vapor with a mole fraction (YHAC) of 0.90 begin to condense? (b) What will be the mole fraction (xHAe) of the liquid formed from the vapor condensing in (a)? (c) What is the boiling temperature of a solution with a mole fraction (ZHAC) of 0.20? (d) What is the mole fraction (yHac) of the vapor above a solution with ZHAC=0.20? %3D

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