Problem: Consider the reaction: 2 H2(g) + O2(g) → 2 H2O(l). Use the enthalpies of formation in Appendix C to determine the true reaction enthalpy.

FREE Expert Solution

2 H2(g) + O2(g) → 2 H2O(l)


ΔH°rxn=ΔH°f, prod-ΔH°f, react


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.

ΔH˚f H2(g) = 0 kJ/mol

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Problem Details

Consider the reaction: 2 H2(g) + O2(g) → 2 H2O(l). Use the enthalpies of formation in Appendix C to determine the true reaction enthalpy.

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