# Problem: Calculate the enthalpy of the reaction2NO(g) + O2(g) → 2NO2(g)given the following reactions and enthalpies of formation:12N2(g) + O2(g) → NO2(g),   ΔH∘A = 33.2 kJ12N2(g) + 1/2 O2(g) → NO(g),  ΔH∘B = 90.2 kJ

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Calculate the enthalpy of the reaction

2NO(g) + O2(g) → 2NO2(g)

given the following reactions and enthalpies of formation:

12N2(g) + O2(g) → NO2(g),   ΔH= 33.2 kJ

12N2(g) + 1/2 O2(g) → NO(g),  ΔH= 90.2 kJ

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Our tutors have indicated that to solve this problem you will need to apply the Hess's Law concept. You can view video lessons to learn Hess's Law. Or if you need more Hess's Law practice, you can also practice Hess's Law practice problems.

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