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Homework Help: Evacuated rigid container

  1. Oct 15, 2008 #1
    1. The problem statement, all variables and given/known data
    At 258°C, Kp = 2.9 x 10^-3 atm3 for the following reaction.

    NH4OCONH2(s) <--> 2 NH3(g) + CO2(g)

    In an experiment carried out at 258°C, a certain amount of NH4OCONH2 is placed in an evacuated rigid container and allowed to come to equilibrium. Calculate the total pressure in the container at equilibrium.

    2. Relevant equations
    I think its [NH4OCONH2]/[NH3]^2[CO2]=2.9 x 10^-3

    3. The attempt at a solution
    I tried squaring it and also taking the square root of it but neither of it was right. I also tried the reciprocal.
  2. jcsd
  3. Oct 16, 2008 #2


    User Avatar

    Staff: Mentor

    Re: Equilibrium

    How are pressures of ammonia and carbon dioxide related to each other?

    What is the activity of solid NH4OCONH2?
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