The table below shows the vapor pressures, VP (kPa) for n‐hexane and n‐octane. Vapor Pressure (kPa)...

The table below shows the vapor pressures, VP (kPa) for n‐hexane and n‐octane.

	Vapor Pressure (kPa)	Vapor Pressure (kPa)
Temp (C)	n‐Hexane	n‐Octane
68.7	101	13
79.4	137	23
93.3	197	37
107.2	284	58
121.1	400	87
125.7	456	101

Source. J. B. Maxwell, Data Book on Hydrocarbons

(a) Assuming ideal solution and gas behavior, construct Txy and xy diagrams for this system at

101 kPa.

(b) When a liquid containing 30 mol% n‐Hexane is heated, what is the composition of the initial

vapor formed at the bubble‐point temperature?

(c) Let the initial amount of vapor formed in part (b) be condensed to its bubble point and

separated from the liquid producing it. what is the composition of the initial vapor formed?

Show the sequential processes (b) and (c) on the xy and Txy diagrams.

Expert Solution

queen_honey_blossom answered 2 years ago

Compare the Peng-Robinson vapor pressures to the experimental vapor pressures (respresented by Antoines constants) for n-Hexane

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