At 500 C the equilibrium concentrations are NH₃= 0.0596 M , N₂= 0.600 M , and H₂ = 0.420 M for the reaction N₂(g) + 3 H₂ (g) 2 NH₃(g). Calculate K c .

Question

At 500 C the equilibrium concentrations are NH₃= 0.0596 M , N₂= 0.600 M , and H₂ = 0.420 M for the reaction N₂(g) + 3 H₂ (g)  2 NH₃(g). Calculate K c .

Quizplus · Accepted Answer

Kc = ([NH3]^2/[N2][H2]^3)
Substitute the given equilibrium concentrations and solve:
Kc = ([0.0596]^2/([0.600][0.420]^3)) = 0.0799 (rounded to four significant figures)

Therefore, the correct choice is C.

At 500 C the Equilibrium Concentrations Are NH₃= 0