Calculate the ΔG°_rxn using the following information. 4 HNO₃(g) + 5 N₂H₄(l) → 7 N₂(g) + 12 H₂O(l) ΔG°_rxn= ?
ΔH°_f (kJ/mol) -133.9 50.6 -285.8
S°(J/mol∙K) 266.9 121.2 191.6 70.0

Question

Calculate the ΔG°_rxn using the following information. 4 HNO₃(g)+ 5 N₂H₄(l)→ 7 N₂(g)+ 12 H₂O(l)ΔG°_rxn= ? ΔH°_f (kJ/mol)-133.9 50.6 -285.8 S°(J/mol∙K)266.9 121.2 191.6 70.0

Quizplus · Accepted Answer

ΔG°_rxn = ΔH°_rxn - TΔS°_rxnΔH°_rxn = [7(-285.8) + 12(-237.1)] - [4(-133.9) + 5(50.6)] = -3.15 × 10³ kJΔS°_rxn = [7(191.6) + 12(70.0)] - [4(266.9) + 5(121.2)] = -105.2 J/mol∙KΔG°_rxn = -3.15 × 10³ kJ - (298 K)(-105.2 J/mol∙K) = -3.30 × 10³ kJ

Calculate the ΔG°rxn Using the Following Information

Calculate the ΔG°_rxn Using the Following Information