Problem: How do you calculate the enthalpy change in the following reaction:4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O?

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We’re being asked to determine how to calculate the enthalpy change in the following reaction.


4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O


Recall that ΔH˚rxn can be calculated from the enthalpy of formation (ΔH˚f) of the reactants and products involved. We can use the following equation to solve for ΔH˚rxn:

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Problem Details

How do you calculate the enthalpy change in the following reaction:

4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O?

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