DarianaCalculating an equilibrium composition after a prior equil..While ethanol (CH, CH,OH) is produced naturally by fermentation, e.g. in beer- and wine-making, industrially it is synthesized by reacting ethylene(CH, CH,) with water vapor at elevated temperatures.A chemical engineer studying this reaction fills a 500. mL flask with 3.1 atm of ethylene gas and 4.4 atm of water vapor. When the mixture has cometo equilibrium she determines that it contains 2.0 atm of ethylene gas and 3.3 atm of water vapor.oloThe engineer then adds another 2.2 atm of water, and allows the mixture to come to equilibrium again. Calculate the pressure of ethanol afterequilibrium is reached the second time. Round your answer to 2 significant digits.ArI| atmOx10

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Asked Feb 23, 2020
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Dariana
Calculating an equilibrium composition after a prior equil..
While ethanol (CH, CH,OH) is produced naturally by fermentation, e.g. in beer- and wine-making, industrially it is synthesized by reacting ethylene
(CH, CH,) with water vapor at elevated temperatures.
A chemical engineer studying this reaction fills a 500. mL flask with 3.1 atm of ethylene gas and 4.4 atm of water vapor. When the mixture has come
to equilibrium she determines that it contains 2.0 atm of ethylene gas and 3.3 atm of water vapor.
olo
The engineer then adds another 2.2 atm of water, and allows the mixture to come to equilibrium again. Calculate the pressure of ethanol after
equilibrium is reached the second time. Round your answer to 2 significant digits.
Ar
I| atm
Ox10
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Dariana Calculating an equilibrium composition after a prior equil.. While ethanol (CH, CH,OH) is produced naturally by fermentation, e.g. in beer- and wine-making, industrially it is synthesized by reacting ethylene (CH, CH,) with water vapor at elevated temperatures. A chemical engineer studying this reaction fills a 500. mL flask with 3.1 atm of ethylene gas and 4.4 atm of water vapor. When the mixture has come to equilibrium she determines that it contains 2.0 atm of ethylene gas and 3.3 atm of water vapor. olo The engineer then adds another 2.2 atm of water, and allows the mixture to come to equilibrium again. Calculate the pressure of ethanol after equilibrium is reached the second time. Round your answer to 2 significant digits. Ar I| atm Ox10

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Expert Answer

Step 1

For the given reaction, the equation for equilibrium constant can be written as above.

Chemistry homework question answer, step 1, image 1

Step 2

As the reaction proceeds, it attains equilibrium and hence the equilibrium pressure can be determined using ICE table.

Chemistry homework question answer, step 2, image 1

At equilibrium,

Pethylene = (3.1 – x)

2.0 = 3.1 – x

X = 3.1 – 2.0

X = 1.1

Pethanol = 1.1 atm

PH2O = 3.3 atm

Step 3

Calculation for Kp:

Chemistry homework question answer, step 3, image 1

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