A chemical engineer is studying the following reaction: CH 4(9)+2H,S(g) → CS2(9)+4H,(9) At the temperature the engineer picks, the equilibrium constant K, for this reaction is 0.020. The engineer charges ("fills") four reaction vessels with methane and hydrogen sulfide, and lets the reaction begin. She then measures the composition of th mixture inside each vessel from time to time. Her first set of measurements are shown in the table below. Predict the changes in the compositions the engineer should expect next time she measures the compositions. reaction vessel compound pressure expected change in pressure CH4 8.25 atm t increase I decrease (no change) H,S 3.44 atm t increase OI decrease (no change) Cs, 2.39 atm t increase I decrease (no change) 2.60 atm t increase I decrease O (no change) CH 8.99 atm t increase I decrease (no change)
A chemical engineer is studying the following reaction: CH 4(9)+2H,S(g) → CS2(9)+4H,(9) At the temperature the engineer picks, the equilibrium constant K, for this reaction is 0.020. The engineer charges ("fills") four reaction vessels with methane and hydrogen sulfide, and lets the reaction begin. She then measures the composition of th mixture inside each vessel from time to time. Her first set of measurements are shown in the table below. Predict the changes in the compositions the engineer should expect next time she measures the compositions. reaction vessel compound pressure expected change in pressure CH4 8.25 atm t increase I decrease (no change) H,S 3.44 atm t increase OI decrease (no change) Cs, 2.39 atm t increase I decrease (no change) 2.60 atm t increase I decrease O (no change) CH 8.99 atm t increase I decrease (no change)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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![**Study of Reaction Equilibrium**
A chemical engineer is studying the following reaction:
\[ \text{CH}_4(g) + 2\text{H}_2\text{S}(g) \rightarrow \text{CS}_2(g) + 4\text{H}_2(g) \]
The equilibrium constant \( K_p \) for this reaction at the selected temperature is 0.020.
The engineer initiates the reaction by charging four different reaction vessels with methane (CH₄) and hydrogen sulfide (H₂S). She records the pressures within these vessels to monitor the reaction progress. The table below shows her first set of measurements and helps predict the expected changes in compositions during subsequent reactions.
| Reaction Vessel | Compound | Pressure (atm) | Expected Change in Pressure |
|-----------------|----------|----------------|--------------------------------|
| A | CH₄ | 8.25 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂S | 3.44 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | CS₂ | 2.39 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂ | 2.60 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| B | CH₄ | 8.99 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂S | 4.94 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | CS₂ | 1.65 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂ | -0.40 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| C | CH₄ | 8.92 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂S | 4.79 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | CS₂ | 1.72 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂ | -0.11 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
The table provides a structured approach to observe changes in the reaction mixture, offering insights into the](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0259c9da-a893-42a4-9aeb-f2e84d3b7404%2F107f9067-9937-4de8-96aa-7ccb45607ead%2Figmplaa_processed.png&w=3840&q=75)
Transcribed Image Text:**Study of Reaction Equilibrium**
A chemical engineer is studying the following reaction:
\[ \text{CH}_4(g) + 2\text{H}_2\text{S}(g) \rightarrow \text{CS}_2(g) + 4\text{H}_2(g) \]
The equilibrium constant \( K_p \) for this reaction at the selected temperature is 0.020.
The engineer initiates the reaction by charging four different reaction vessels with methane (CH₄) and hydrogen sulfide (H₂S). She records the pressures within these vessels to monitor the reaction progress. The table below shows her first set of measurements and helps predict the expected changes in compositions during subsequent reactions.
| Reaction Vessel | Compound | Pressure (atm) | Expected Change in Pressure |
|-----------------|----------|----------------|--------------------------------|
| A | CH₄ | 8.25 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂S | 3.44 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | CS₂ | 2.39 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂ | 2.60 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| B | CH₄ | 8.99 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂S | 4.94 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | CS₂ | 1.65 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂ | -0.40 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| C | CH₄ | 8.92 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂S | 4.79 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | CS₂ | 1.72 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
| | H₂ | -0.11 | ○ ↑ increase ○ ↓ decrease ○ (no change) |
The table provides a structured approach to observe changes in the reaction mixture, offering insights into the
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