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Partial pressure problem

  1. Feb 25, 2013 #1
    1. The problem statement, all variables and given/known data
    when steam was heated with excess carbon in a closed container to 1800kpa, the partial pressure of steam at equilibrium of steam was 318kpa, find Kp H2
    ,Kp CO and find Kp

    2. Relevant equations

    H2O(g) + C(s) -> H2(g) + CO(g)

    3. The attempt at a solution

    I'm so confused because I only have 1 value,

    I tried to find the initial moles of H2 but I can't.

    Help is much appreciated.
  2. jcsd
  3. Feb 25, 2013 #2


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    If you know the partial pressure of one component, then the partial pressure of the other component must be the total pressure - partial pressure of the first component.
  4. Feb 25, 2013 #3
    They I would just divide it equally among them?
  5. Feb 26, 2013 #4


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    No. Read my post again.
  6. Feb 26, 2013 #5
    So the Kp of H2 and CO would be

    1800-318= 1482?
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