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Thread: Equilibrium concentrations?

  1. #1 Equilibrium concentrations? 
    New Member
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    Jun 2010
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    I would really appreciate it if someone could set me in the right path for solving this question!

    Original:
    SO2(g) + NO2(g) → SO3(g) + NO(g)
    SO2 = 3.5 mol/L
    NO2 = 0.75 mol/L
    SO3 = 3.0 mol/L
    NO = 2.5 mol/L
    Keq = [products] / [reactants] = [3.0][2.5] / [3.5][0.75] = 2.9

    What would be the new equilibrium concentration of NO when Megan adds 1.5 mols of NO2 to a litre of the first mixture?


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  3. #2  
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    The mixture would want to keep a of 2.9. When you add , the K decreases, and the mixture makes it up by shifting to the right so K becomes 2.9 (equalibrium) again.
    Add 1.5 mole to the , And find out the concentration of NO and needed to get K to be 2.9 again. They would increase by the same amount.


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  4. #3  
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    Thanks a ton! That helped a lot
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  5. #4  
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    Glad to help.
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