Problem: Write the pressure equilibrium constant expression for this reactionH2O (g) + C (s) → H2 (g) + CO (g)

FREE Expert Solution

We’re being asked to determine the equilibrium expression of this reaction:

H2O (g) + C (s) → H(g) + CO (g)


Recall that the equilibrium constant is the ratio of the products and reactants. We use Kp when dealing with pressure and Kc when dealing with concentration:


Kp=PproductsPreactants     Kc=[products][reactants]


Note that solid and liquid compounds are ignored in the equilibrium expression.


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Problem Details

Write the pressure equilibrium constant expression for this reaction

H2O (g) + C (s) → H2 (g) + CO (g)

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