Chapter6: Thermochemistry
Section: Chapter Questions
Problem 77E: Give the definition of the standard enthalpy of formation for a substance. Write separate reactions...
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Use the given hypothetical standard enthalpies of formation to calculate the ΔHo (in kJ) for the reaction:
2NH3 (g) + 2CH4 (g) + 3O2 (g) → 2HCN (g) + 6H2O (l)
ΔHof for NH3 (g) = -48 kJ/mol
ΔHof for CH4 (g) = -71.8 kJ/mol
ΔHof for O2 (g) = 0 kJ/mol
ΔHof for HCN (g) = +126.3 kJ/mol
ΔHof for H2O (l) = -285.9 kJ/mol
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