A chemical engineer is studying the following reaction:2 H₂S(g)+30₂(g) → 2 SO₂(g) +2H₂O(g)At the temperature the engineer picks, the equilibrium constant K for this reaction is 5.0.The engineer charges ("fills") four reaction vessels with hydrogen sulfide and oxygen, and lets the reaction begin. He thenmeasures the composition of the mixture inside each vessel from time to time. His first set of measurements are shown in thetable below.Predict the changes in the compositions the engineer should expect next time he measures the compositions.reactionvesselABcompoundH₂S0₂SO2H₂OH₂S0₂SO₂H₂OH₂S02SO₂H₂Opressure9.08 atm1.44 atm10.07 atm8.80 atm8.96 atm1.26 atm10.19 atm8.92 atm10.40 atm3.42 atm8.75 atm7.48 atmexpected change in pressure↑ increase O decrease↑ increase↑ increase↑ increase↑ increase↑ increase↑ increase↑ increase↑ increase↑ increaseO decrease↑ increasedecreaseO decrease↑ increase O decrease↓ decreaseO decrease↓ decreaseO decreaseO decrease↓ decrease↓ decrease(no change)(no change)(no change)(no change)(no change)(no change)(no change)(no change)(no change)(no change)(no change)(no change)

Answered: A chemical engineer is studying the…

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 12.101PAE: 12.101 An engineer working on a design to extract petroleum from a deep thermal reservoir wishes to...

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A chemical engineer is studying the following reaction:
2 H₂S(g)+30₂(g) → 2 SO₂(g) +2H₂O(g)
At the temperature the engineer picks, the equilibrium constant K for this reaction is 5.0.
The engineer charges ("fills") four reaction vessels with hydrogen sulfide and oxygen, and lets the reaction begin. He then
measures the composition of the mixture inside each vessel from time to time. His first set of measurements are shown in the
table below.
Predict the changes in the compositions the engineer should expect next time he measures the compositions.
reaction
vessel
A
B
compound
H₂S
0₂
SO2
H₂O
H₂S
0₂
SO₂
H₂O
H₂S
02
SO₂
H₂O
pressure
9.08 atm
1.44 atm
10.07 atm
8.80 atm
8.96 atm
1.26 atm
10.19 atm
8.92 atm
10.40 atm
3.42 atm
8.75 atm
7.48 atm
expected change in pressure
↑ increase O decrease
↑ increase
↑ increase
↑ increase
↑ increase
↑ increase
↑ increase
↑ increase
↑ increase
↑ increase
O decrease
↑ increase
decrease
O decrease
↑ increase O decrease
↓ decrease
O decrease
↓ decrease
O decrease
O decrease
↓ decrease
↓ decrease
(no change)
(no change)
(no change)
(no change)
(no change)
(no change)
(no change)
(no change)
(no change)
(no change)
(no change)
(no change)

Expert Solution

Step 1

The direction in which the reaction proceeds to reach equilibrium can be predicted by determining the reaction quotient at given partial pressure of Reaction species.

Reaction quotient is the product of the concentrations of the products, each raised to the power equal to a stoichiometric coefficient divided by the product of the concentrations of the reactant each raised to the power equal to its stoichiometric coefficient at a particular point of time.

If Qp > Kp , then the reaction will shift to the left i.e. towards reactants.
If Qp < Kp, then the reaction will shift to the right i.e. towards products.
If Qp = Kp, then the reaction is at equilibrium.

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