Use Hess's Law to Calculate ΔG°_rxn Using the Following Information

question 51

Multiple Choice

Use Hess's law to calculate ΔG°_rxn using the following information. CO(g) → C(s) + 1/2 O₂(g) ΔG°_rxn = ?
CO₂(g) → C(s) + O₂(g) ΔG°_rxn = +394.4 kJ
CO(g) + 1/2 O₂(g) → CO₂(g) ΔG°_rxn = -257.2 kJ

• A) -60.0 kJ
• B) +651.6 kJ
• C) +265.8 kJ
• D) +137.2 kJ
• E) -137.2 kJ

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