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Need help with equilibrium equations - Please

  1. Jul 29, 2013 #1
    Need help with equilibrium equations -- ASAP Please

    1. The problem statement, all variables and given/known data

    I'm studying for a final that I'm taking tomorrow and am stuck on the following:

    Calculate Kc for the reaction:

    4NOBr (g) [itex]\Leftrightarrow[/itex] 4NO (g) + 2Br2 (g)

    given the following information:

    2NO(g) + Br2 (g) [itex]\Leftrightarrow[/itex] 2NOBr (g); K = 2.0

    2. Relevant equations

    Not sure about which equations other than Kc = [itex]\frac{[products]}{[reactions]}[/itex]

    3. The attempt at a solution

    I can't even start this answer. My first assumption of where to start was to write the second equation backwards, just so it looked like the first!!??
     
  2. jcsd
  3. Jul 30, 2013 #2

    epenguin

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  4. Jul 30, 2013 #3
    [tex]K_c=(1/K)^2[/tex]
     
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