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A. Calculate the standard enthalpy change of the reaction in kJ. Is the process endothermic or exothermic! B. Calculate the standard entropy change of the reaction in J/K. C. Calculate the standard Gibbs free energy change of the reaction in kJ at 298 K. Is the reaction spontaneous at 298 K? ( s)

A. Calculate the standard enthalpy change of the reaction in kJ. Is the process endothermic or exothermic! B. Calculate the standard entropy change of the reaction in J/K. C. Calculate the standard Gibbs free energy change of the reaction in kJ at 298 K. Is the reaction spontaneous at 298 K? ( s)

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
Section: Chapter Questions
Problem 54QRT
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Consider the following reaction and the tabulated thermochemical data at 298 K. 4 NH3(g) + 5 Ozg) → 6 H2Og) + 4 NO(g) Substance NH3g) Oze) NOE) AH°r (kJ/mol) S° (J/mol-K) -46.1 -241.8 90.3 192.3 205.0 188.7 210.7 A. Calculate the standard enthalpy change of the reaction in kJ. Is the process endothermic or exothermic. B. Calculate the standard entropy change of the reaction in J/K. C. Calculate the standard Gibbs free energy change of the reaction in kJ at 298 K. Is the reaction spontaneous at 298 K? ( s) D. Calculate the equilibrium constant at 298 K. (. , E. Calculate the Gibbs free energy change at 298 K for a mixture containing 2.0 atm NH3e), 1.0 atm Oze), 1.5 atm H;O@), and 1.2 atm NOg). ( )
Transcribed Image Text:Consider the following reaction and the tabulated thermochemical data at 298 K. 4 NH3(g) + 5 Ozg) → 6 H2Og) + 4 NO(g) Substance NH3g) Oze) NOE) AH°r (kJ/mol) S° (J/mol-K) -46.1 -241.8 90.3 192.3 205.0 188.7 210.7 A. Calculate the standard enthalpy change of the reaction in kJ. Is the process endothermic or exothermic. B. Calculate the standard entropy change of the reaction in J/K. C. Calculate the standard Gibbs free energy change of the reaction in kJ at 298 K. Is the reaction spontaneous at 298 K? ( s) D. Calculate the equilibrium constant at 298 K. (. , E. Calculate the Gibbs free energy change at 298 K for a mixture containing 2.0 atm NH3e), 1.0 atm Oze), 1.5 atm H;O@), and 1.2 atm NOg). ( )
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