N2(g)+3H2(g)⇄2NH3(g) K=5.6×105at298K ΔH°rxn=−91.8kJ/molrxn The synthesis of NH3 is represented by the equation above. Based on the equilibrium constant, K, and ΔH°rxn given above, which of the following can best be used to justify that the reaction is thermodynamically favorable at 298K and constant pressure?

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
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Chapter14: Chemical Equilibrium
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N2(g)+3H2(g)⇄2NH3(g) K=5.6×105at298K ΔH°rxn=−91.8kJ/molrxn The synthesis of NH3 is represented by the equation above. Based on the equilibrium constant, K, and ΔH°rxn given above, which of the following can best be used to justify that the reaction is thermodynamically favorable at 298K and constant pressure?
 
 
a) ΔG°=−RTlnK<0 because K>>1
b) ΔG°=−RTlnK>0 because K>>1
c) ΔG°=ΔH°−TΔS°<0 because ΔH°<0 and ΔS°>0
d) ΔG°=ΔH°−TΔS°>0 because ΔH°<0 and ΔS°<0
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