.Verizon89%5:33 PMDone2. A liquid system consisting of 5 % mole ethanol and the restbeing water is subjected to distillation at 1 atm (101.325kPa). Using the following diagram determine:composition of the vapor phase.subsequently the resulting liquid is subjected to distillation,a) The temperature at which this solution will boil and theb) If the vapor from part a) is condensed completely andwhat would be the composition of the resulting vapor?Data taken from Dortmund Data BankVapor-Liquid EquilibriumMixture of Ethanol and Water374372370368366364: 362 | |:P-101.325 kPa358356-1---.354 *AzeotropicPoint ...γ.3500.1 0.2 0.3 0.4 0.5 0.6 0708 0.9Mole Fraction of Ethanol [mol/mol]PureWaterEthanolIndicate in the diagram the temperatures and compositions forpart a) and b)Open WithPrint

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Asked Apr 19, 2019
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.Verizon
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5:33 PM
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2. A liquid system consisting of 5 % mole ethanol and the rest
being water is subjected to distillation at 1 atm (101.325
kPa). Using the following diagram determine:
composition of the vapor phase.
subsequently the resulting liquid is subjected to distillation,
a) The temperature at which this solution will boil and the
b) If the vapor from part a) is condensed completely and
what would be the composition of the resulting vapor?
Data taken from Dortmund Data Bank
Vapor-Liquid Equilibrium
Mixture of Ethanol and Water
374
372
370
368
366
364
: 362 | |
:P-101.325 kPa
358
356-1---.
354 *
Azeotropic
Point .
..γ
.
350
0.1 0.2 0.3 0.4 0.5 0.6 0708 0.9
Mole Fraction of Ethanol [mol/mol]
Pure
Water
Ethanol
Indicate in the diagram the temperatures and compositions for
part a) and b)
Open With
Print
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.Verizon 89% 5:33 PM Done 2. A liquid system consisting of 5 % mole ethanol and the rest being water is subjected to distillation at 1 atm (101.325 kPa). Using the following diagram determine: composition of the vapor phase. subsequently the resulting liquid is subjected to distillation, a) The temperature at which this solution will boil and the b) If the vapor from part a) is condensed completely and what would be the composition of the resulting vapor? Data taken from Dortmund Data Bank Vapor-Liquid Equilibrium Mixture of Ethanol and Water 374 372 370 368 366 364 : 362 | | :P-101.325 kPa 358 356-1---. 354 * Azeotropic Point . ..γ . 350 0.1 0.2 0.3 0.4 0.5 0.6 0708 0.9 Mole Fraction of Ethanol [mol/mol] Pure Water Ethanol Indicate in the diagram the temperatures and compositions for part a) and b) Open With Print

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Step 1

Part (a)

 

At constant pressure, the temperature at which the liquid mixture boils is determined as shown below.

For 5% ethanol mole fraction, that is, xethanol = 0.05, draw a vertical line till point A. This is the temperature at which first bubble of the vapor appears and is the boiling point for 5% ethanol mixture at 1 atm. The temperature is, T= 363 K.

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Step 2

The composition of the vapor phase at this point is estimated from the given figure by drawing a horizontal line from point A to point B at this temperature.

The composition corresponding to this point B is given by point C.

yethanol = 0.34

ywater = 0.66

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Step 3

Part (b)

The vapor which is condensed, follows the path as shown in the figure below.

From point B, the vapor is condensed to point D. at this point liquid mixture having composition 0.34 mole fraction of e...

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