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What is the standard free energy change, A°G, for the following reaction at 298K? C;H,OH(1) + 30:(g) 2CO:(g) + 3H;O(g)

What is the standard free energy change, A°G, for the following reaction at 298K? C;H,OH(1) + 30:(g) 2CO:(g) + 3H;O(g)

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter10: Entropy And The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 10.51PAE: 10.51 The combustion of acetylene was used in welder's torches for many years because it produces a...
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1. The molar heat of vaporization of ethanol is 39.3 kJ/mol and the boiling point of ethanol is 78.3°C. Calculate AS for the vaporization of 0.50 mol ethanol. 2. What is the standard free energy change, AºG, for the following reaction at 298K? C;H,OH(1) + 30:(g) + 2CO:(g) + 3H,0(g) 3. a) Calculate AG° and K, for the following equilibrium reaction at 25°C. The AG; values are: Cl(g),0; PCI:(g), -286 kJ/mol; and PCI:(g), -325 kJ/mol. PCI:(g) → PCI:(g) + CI:(g) b) Calculate AG for the reaction if the partial pressures of the initial mixture are: PPCIS = 0.0029 atm, PPCI3 = 0.27 atm, and Pck = 0.40 atm. %3D %3D 4. Suppose that a reaction has AH = -28 kJ and AS= -60 J/K. At what temperature will it change from spontaneous to non-spontaneous?
Transcribed Image Text:1. The molar heat of vaporization of ethanol is 39.3 kJ/mol and the boiling point of ethanol is 78.3°C. Calculate AS for the vaporization of 0.50 mol ethanol. 2. What is the standard free energy change, AºG, for the following reaction at 298K? C;H,OH(1) + 30:(g) + 2CO:(g) + 3H,0(g) 3. a) Calculate AG° and K, for the following equilibrium reaction at 25°C. The AG; values are: Cl(g),0; PCI:(g), -286 kJ/mol; and PCI:(g), -325 kJ/mol. PCI:(g) → PCI:(g) + CI:(g) b) Calculate AG for the reaction if the partial pressures of the initial mixture are: PPCIS = 0.0029 atm, PPCI3 = 0.27 atm, and Pck = 0.40 atm. %3D %3D 4. Suppose that a reaction has AH = -28 kJ and AS= -60 J/K. At what temperature will it change from spontaneous to non-spontaneous?
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