A compound X and water form a heterogeneous mixture. The vapor pressures of X an

Question

A compound X and water form a heterogeneous mixture. The vapor pressures of X and water at various temperatures are shown in the table below: Temperature (C) Vapor Pressure of X 75 80 Vapor Pressure of H,O 250 torr 290 torr 434 to 526 torr or 326 torr 394 torr 90 Consider the discussion about heterogeneous distillation included in this experiment, and answer the following questions: Under standard atmospheric pressure, at what temperature would distillation of a heterogeneous mixture of X and water occur? A. What would be the mole % composition of the distillate? Mole % H2 Show calculations below or attach a separate sheet with calculations. B. ur , Mole %

Explanation / Answer

A. Standard atmospheric pressure is 760 torr or 760 mm Hg

So, it will only be feasible for temperature where total Pressure Pt = 434+326 = 760 torr.

Part B :

mole % for X = 43400/760 = 57.1 %

mole % of H2O = 100 - 57.1 = 42.89 %

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