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2. Synthesis gas, a mixture that includes the fuels CO and H2 is used to produce liquid hydrocarbons and methanol. It is made at pressures up to 100. atm by oxidation of methane followed by the steam re-forming and water-gas shift reactions. Because the process is exothermic, temperatures reach 950-1100°C, and the conditions are such that the amounts of H2, CO, CO2, CH4, and H20 leaving the reactor are close to their equilibrium amounts in these reactions: CH4 (g) + H20 (g) 5 CO (g) + 3 H2 (g) CO (g) + H20 (g) S CO2 (g) + H2 (g) (steam re-forming) (water-gas shift)

2. Synthesis gas, a mixture that includes the fuels CO and H2 is used to produce liquid hydrocarbons and methanol. It is made at pressures up to 100. atm by oxidation of methane followed by the steam re-forming and water-gas shift reactions. Because the process is exothermic, temperatures reach 950-1100°C, and the conditions are such that the amounts of H2, CO, CO2, CH4, and H20 leaving the reactor are close to their equilibrium amounts in these reactions: CH4 (g) + H20 (g) 5 CO (g) + 3 H2 (g) CO (g) + H20 (g) S CO2 (g) + H2 (g) (steam re-forming) (water-gas shift)

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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2. Synthesis gas, a mixture that includes the fuels CO and H2 is used to produce liquid hydrocarbons and methanol. It is made at pressures up to 100. atm by oxidation of methane followed by the steam re-forming and water-gas shift reactions. Because the process is exothermic, temperatures reach 950-1100°C, and the conditions are such that the amounts of H2, CO, CO2, CH4, and H20 leaving the reactor are close to their equilibrium amounts in these reactions: CH4 (g) + H20 (g) CO (g) + 3 H2 (g) CO (g) + H2O (g) 5 CO2 (g) + H2 (g) (steam re-forming) (water-gas shift) Calculate the AH°, AS°, AG°, and K (at 298 K) for these two steps in this industrial a. process b. Assuming relatively little change in H or G, what is S for these two steps at 1000.°C? C. If the overall reaction for these two reactions is: 2 CH4 (g) + 3 H2O (g) 5 CO2 (g) + CO (g) + 7 H2 (g) Using standard molar formation thermodynamic values, is this reaction spontaneous at 1000.°C?
Transcribed Image Text:2. Synthesis gas, a mixture that includes the fuels CO and H2 is used to produce liquid hydrocarbons and methanol. It is made at pressures up to 100. atm by oxidation of methane followed by the steam re-forming and water-gas shift reactions. Because the process is exothermic, temperatures reach 950-1100°C, and the conditions are such that the amounts of H2, CO, CO2, CH4, and H20 leaving the reactor are close to their equilibrium amounts in these reactions: CH4 (g) + H20 (g) CO (g) + 3 H2 (g) CO (g) + H2O (g) 5 CO2 (g) + H2 (g) (steam re-forming) (water-gas shift) Calculate the AH°, AS°, AG°, and K (at 298 K) for these two steps in this industrial a. process b. Assuming relatively little change in H or G, what is S for these two steps at 1000.°C? C. If the overall reaction for these two reactions is: 2 CH4 (g) + 3 H2O (g) 5 CO2 (g) + CO (g) + 7 H2 (g) Using standard molar formation thermodynamic values, is this reaction spontaneous at 1000.°C?
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