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H₂(g)+12(g) → 2 HI(g) At the temperature the engineer picks, the equilibrium constant K, for this reaction is 1.2. P The engineer charges ("fills") three reaction vessels with hydrogen and iodine, 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 с compound H₂ 1₂ HI H₂ 1₂ HI H₂ 1₂ HI pressure 2.39 atm 3.83 atm 4.71 atm. 2.82 atm. 4.26 atm 3.85 atm 3.81 atm. 5.76 atm 5.21 atm expected change in pressure Ot increase O decrease Ot increase O decrease Ot increase Ot increase Ot increase Ot increase O decrease O decrease Odecrease O decrease Ot increase O↑ increase O decrease decrease Ot increase O decrease X O(no change) (no change) (no change) (no change) (no change) (no change) O(no change) (no change) (no change) 5

H₂(g)+12(g) → 2 HI(g) At the temperature the engineer picks, the equilibrium constant K, for this reaction is 1.2. P The engineer charges ("fills") three reaction vessels with hydrogen and iodine, 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 с compound H₂ 1₂ HI H₂ 1₂ HI H₂ 1₂ HI pressure 2.39 atm 3.83 atm 4.71 atm. 2.82 atm. 4.26 atm 3.85 atm 3.81 atm. 5.76 atm 5.21 atm expected change in pressure Ot increase O decrease Ot increase O decrease Ot increase Ot increase Ot increase Ot increase O decrease O decrease Odecrease O decrease Ot increase O↑ increase O decrease decrease Ot increase O decrease X O(no change) (no change) (no change) (no change) (no change) (no change) O(no change) (no change) (no change) 5

Chemistry for Engineering Students
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 12.41PAE: Because calcium carbonate is a sink for CO32- in a lake, the student in Exercise 12.39 decides to go...
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A chemical engineer is studying the following reaction: H₂(g)+I₂(g) → 2 HI(g) At the temperature the engineer picks, the equilibrium constant The engineer charges ("fills") three reaction vessels with hydrogen and iodine, 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 C compound H₂ 1₂ HI H₂ 1₂ HI H₂ 1₂ HI pressure 2.39 atm 3.83 atm 4.71 atm 2.82 atm 4.26 atm 3.85 atm 3.81 atm 5.76 atm 5.21 atm expected change in pressure ↑ increase increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase for this reaction is 1.2. р ↑ increase ↑ increase ↓ decrease ↓decrease ↓ decrease ↓ decrease ↓decrease ↓ decrease ↓ decrease ↓decrease ↓ decrease X (no change) (no change) (no change) (no change) (no change) (no change) (no change) (no change) (no change) Ś
Transcribed Image Text:A chemical engineer is studying the following reaction: H₂(g)+I₂(g) → 2 HI(g) At the temperature the engineer picks, the equilibrium constant The engineer charges ("fills") three reaction vessels with hydrogen and iodine, 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 C compound H₂ 1₂ HI H₂ 1₂ HI H₂ 1₂ HI pressure 2.39 atm 3.83 atm 4.71 atm 2.82 atm 4.26 atm 3.85 atm 3.81 atm 5.76 atm 5.21 atm expected change in pressure ↑ increase increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase for this reaction is 1.2. р ↑ increase ↑ increase ↓ decrease ↓decrease ↓ decrease ↓ decrease ↓decrease ↓ decrease ↓ decrease ↓decrease ↓ decrease X (no change) (no change) (no change) (no change) (no change) (no change) (no change) (no change) (no change) Ś
Expert Solution
Step 1

The reaction quotient Q is a measure of the relative amounts of products and reactants present in a reaction at a given time. 

If  Q < Kp , reaction proceeds to product side 

If Q > Kp , reaction proceeds to reactants side 

At equilibrium , Q = Kp 

Given Kp = 1.2 

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reaction vessel A B C compound H₂ 1₂2 HI H₂ 1₂ HI H₂ 1₂2 HI pressure 2.39 atm 3.83 atm 4.71 atm 2.82 atm 4.26 atm 3.85 atm 3.81 atm 5.76 atm 5.21 atm expected change in pressure ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↓ decrease ↓ decrease ↓ decrease ↓ decrease ↓ decrease Odecrease ↓ decrease ↓ decrease ↓ decrease OO (no change) (no change) (no change) (no change) (no change) (no change) (no change) (no change) (no change)
Transcribed Image Text:reaction vessel A B C compound H₂ 1₂2 HI H₂ 1₂ HI H₂ 1₂2 HI pressure 2.39 atm 3.83 atm 4.71 atm 2.82 atm 4.26 atm 3.85 atm 3.81 atm 5.76 atm 5.21 atm expected change in pressure ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↓ decrease ↓ decrease ↓ decrease ↓ decrease ↓ decrease Odecrease ↓ decrease ↓ decrease ↓ decrease OO (no change) (no change) (no change) (no change) (no change) (no change) (no change) (no change) (no change)
Try Again Your answer is incorrect. • reaction vessel B: Your answer is incorrect. • reaction vessel C: Your answer is incorrect. A chemical engineer is studying the following reaction: H₂(g) + I₂(g) → 2 HI(g) At the temperature the engineer picks, the equilibrium constant Kp for this reaction is 1.2. р The engineer charges ("fills") three reaction vessels with hydrogen and iodine, 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 H₂ 1₂ HI H₂ 1₂ HI pressure 2.39 atm 3.83 atm 4.71 atm 2.82 atm 4.26 atm 3.85 atm expected change in pressure ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↓ decrease ↓ decrease ↓decrease ↓ decrease ↓ decrease ↓ decrease (no change) (no change) (no change) (no change) (no change) (no change)
Transcribed Image Text:Try Again Your answer is incorrect. • reaction vessel B: Your answer is incorrect. • reaction vessel C: Your answer is incorrect. A chemical engineer is studying the following reaction: H₂(g) + I₂(g) → 2 HI(g) At the temperature the engineer picks, the equilibrium constant Kp for this reaction is 1.2. р The engineer charges ("fills") three reaction vessels with hydrogen and iodine, 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 H₂ 1₂ HI H₂ 1₂ HI pressure 2.39 atm 3.83 atm 4.71 atm 2.82 atm 4.26 atm 3.85 atm expected change in pressure ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↓ decrease ↓ decrease ↓decrease ↓ decrease ↓ decrease ↓ decrease (no change) (no change) (no change) (no change) (no change) (no change)
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