We are asked to calculate the standard enthalpy of formation ( H˚f) for nitroglycerin.
4 C3H5N3O9(l) → 12 CO2(g) + 10 H2O(g) + 6 N2(g) + O2(g), ΔH˚rxn = –5678 kJ
Note that we need to multiply each ΔH˚f by the stoichiometric coefficient since ΔH˚f is in kJ/mol.
Also, note that ΔH˚f for elements in their standard state is 0.
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