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5.3 Exercise 29

Avg difficulty 2.5

Calculate the standard molar enthalpy of formation of NO(g) from the following data:
N2(g)+2O2(g)⟶2NO2(g)ΔH°=66.4kJ2NO(g)+O2(g)⟶2NO2(g)ΔH°=−114.1kJ\begin{matrix}\text{N}_{2} \left(g\right) + 2 \text{O}_{2} \left(g\right) \rightarrow 2 \text{NO}_{2} \left(g\right) \Delta H ° = 66.4 \text{kJ} \\ \text{2NO} \left(g\right) + \text{O}_{2} \left(g\right) \rightarrow 2 \text{NO}_{2} \left(g\right) \Delta H ° = −114.1 \text{kJ}\end{matrix}

OpenStax Chemistry 2e, 5.3 Enthalpy, exercise 29

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Adapted from General Chemistry © 2019 Rice University. Licensed under CC BY 4.0. Sources: Chemistry 2e, Chemistry: Atoms First 2e. Imported at revision 32c7196.