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    Equilibrium Pressure in a System

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    Hydrogen iodide can decompose into hydrogen and iodide gases. Kp for the reaction is 0.016. If 0.350 atm of Hl(g) is sealed in a flask, what would be the total pressure of the system when equilibrium is established?
    a. 0.258atm
    b. 0.279atm
    c. 0.350atm
    d. 0.385atm
    e. 0.412atm

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    Solution Preview

    We have
    2HI ..... H2 + I2
    Kp = 0.016
    Kp = p H2/(p HI)2

    Hence p H2 = Kp * ...

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