Consider the reaction:
2 NH3(g) ⇌ N2(g) + 3 H2(g)
Select the equilibrium constant expression.
(A) Kc = [NH3]2/[N2][H2]3
(B) Kc = [N2]2/[H2][NH3]
(C) Kc = [N2][H2]3/[NH3]2
What is the numerical value of Kc for the reaction if the concentrations at equilibrium are 0.19 M NH3, 5.0 M N2, and 0.60 M H2?
Express your answer using two significant figures.
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