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19 August, 12:15

The value of keq for the equilibrium n2 (g) o2 (g) 2 no (g) is 4.2 x⋅10-31 at 27 °c. what is the value of keq for the equilibrium below

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  1. 19 August, 12:21
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    when the first reaction equation is:

    N2 (g) + O2 (g) → 2NO (g)

    when Keq = the concentrations of the products / concentrations of the reactants

    so, Keq1 = [NO]^2 / [N2][O2]

    ∴ 4.2 x 10^-31 = [NO]^2/[N2][O2].

    and when we multiply this reaction coefficient by 2 so the equilibrium reaction equation is:

    4 NO (g) → 2N2 (g) + 2O2 (g)

    this is the reverse reaction equation of the first reaction multiply by 2. so,

    Keq2 = [O2]^2[N]^2/[NO]^4 and

    Keq2 = 1 / (Keq1) ^2.

    ∴ Keq2 = 1 / (4.2 X10^-31) ^2

    = 5,67·10⁶⁰

    so, the value of Keq for the reaction below is 5.67 X 10^60
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