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Homework Help: Equilibrium constant reaction problem

  1. May 13, 2007 #1
    1. The problem statement, all variables and given/known data

    Given the equilibrium,
    A2(g) + 4C(g) 2AC2(g), K1 = 4.8

    It follows that, for the reaction,
    AC2(g) A2(g) + 2C(g), K2 = X

    X would be

    2. Relevant equations

    3. The attempt at a solution
    Since the equation is the inverse, i know to use 1/K1.
    The mole ratio of everything is halved- why does this mean taking the square root of K1, considering the solution to x is 1/(sqrt4.8).
    I woulda just gone for the other multiple choice option 1/2.4
  2. jcsd
  3. May 13, 2007 #2
    yeah you have to take sq root of the inverse.
  4. May 13, 2007 #3
    but why...could u relate it to theory?
  5. May 13, 2007 #4
    write the expression for eq const for reaction 1 and 2 and subtitute k2 in the exp for k1
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