# Problem: Use Hess’s law to calculate ∆G°rxn using the following information. NO(g) + O(g) → NO2(g), ∆G°rxn = ? 2O3(g) → 3O2(g), ∆G°rxn = +489.6kJ O2(g) → 2O(g), ∆G°rxn = +463.4kJ NO(g) + O3 → NO2(g) + O2(g), ∆G°rxn = -199.5kJ 277.0 kJ -225.7 kJ 753.5 kJ -1152.5 kJ -676.0 kJ

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Use Hess’s law to calculate ∆G°rxn using the following information.

NO(g) + O(g) → NO2(g), ∆G°rxn = ?

2O3(g) → 3O2(g), ∆G°rxn = +489.6kJ

O2(g) → 2O(g), ∆G°rxn = +463.4kJ

NO(g) + O3 → NO2(g) + O2(g), ∆G°rxn = -199.5kJ

1. 277.0 kJ
2. -225.7 kJ
3. 753.5 kJ
4. -1152.5 kJ
5. -676.0 kJ

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Based on our data, we think this problem is relevant for Professor Brayton's class at HAWAII.