Problem: Water gas, a mixture of H2 and CO, is an important industrial fuel produced by the reaction of steam with red hot coke, essentially pure carbon: C(s) + H2O(g) ⟶ CO(g) + H2(g).Assuming that coke has the same enthalpy of formation as graphite, calculate ΔH°298 for this reaction.

FREE Expert Solution

To calculate the ΔH°rxn: ΔH°rxn = ΔH°f (products) - ΔH°f (reactants)

Balanced Reaction: C(s) + H2O(g) CO(g) + H2(g)


Reactants                 ΔH°f (kJ/mol) @ 298 K (values found in books or on the internet)
C(s) (graphite)             0 (natural state)
H2O(g)                         -241.82

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Problem Details

Water gas, a mixture of H2 and CO, is an important industrial fuel produced by the reaction of steam with red hot coke, essentially pure carbon: C(s) + H2O(g) ⟶ CO(g) + H2(g).

Assuming that coke has the same enthalpy of formation as graphite, calculate ΔH°298 for this reaction.

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Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.