Question: Calculate the dew-point pressure, secondary dew-point pressure, and bubble-point pressure of the following mixtures at 50C, assuming that the liquid aromatics and water are mutually

Calculate the dew-point pressure, secondary dew-point pressure, and bubble-point pressure of the following mixtures at 50°C, assuming that the liquid aromatics and water are mutually insoluble:
(a) 50 mol% benzene and 50 mol% water.
(b) 50 mol% toluene and 50 mol% water.
(c) 40 mol% benzene, 40 mol% toluene, and 20 mol%water.

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