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

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