We’re being asked to determine the enthalpy of formation (ΔH˚f) for CO2(g):
H2CO(g) + O2(g) → CO2(g) + H2O(l) ΔH˚rxn = -582.2 kJ
Recall that ΔH˚rxn can be calculated from the enthalpy of formation (ΔH˚f) of the reactants and products involved:
A scientist measures the standard enthalpy change for the following reaction to be -582.2 kJ : H2CO(g) + O2(g) → CO2(g) + H2O(l)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CO2(g) in kJ/mol.
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