Given the equation, calculate the standard free energy change. Answer whatis being asked. 1. N2(g)+3H2(g) --->2NH3(g)If AH = -92.2kJ and AS= -0.1987KJ/K, what is AG for the reaction at 475°Cand at 5°C? Provide the answer in kJ. In each case, is the reactionspontaneous?2. The enthalpy and entropy change of a reaction are -3.9 kJ/mole and +56.6 J/moleK respectively at 250 C. What is the free energy change in kJ/mole? Is this reactionalways spontaneous, never spontaneous or does it depend on the temperature?

The free energy change,ΔG can be calculated using the formula: ΔG = ΔH - TΔS ΔH = enthalpy change ΔS…

Answered: 1. N2(g}+3H2(g) --->2NH3(g) If AH =…

1. N2(g}+3H2(g) --->2NH3(g) If AH = -92.2kJ and AS= -0.1987KJ/K, what is AG for the reaction at 475°C and at 5°C? Provide the answer in kJ. In each case, is the reaction spontaneous?

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter17: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 55E: For the reaction at 298 K, 2NO2(g)N2O4(g) the values of H and S are 58.03 kJ and 176.6 J/K,...

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Question

Given the equation, calculate the standard free energy change. Answer what
is being asked.

1. N2(g)+3H2(g) --->2NH3(g)
If AH = -92.2kJ and AS= -0.1987KJ/K, what is AG for the reaction at 475°C
and at 5°C? Provide the answer in kJ. In each case, is the reaction
spontaneous?
2. The enthalpy and entropy change of a reaction are -3.9 kJ/mole and +56.6 J/mole
K respectively at 250 C. What is the free energy change in kJ/mole? Is this reaction
always spontaneous, never spontaneous or does it depend on the temperature?

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