Question

In a series of equilibrium, haber and their collaborations mixed hydrogen and nitrogen in a vessel, and let it reach equilibrium at 472 C. The equilibrium mixture contained 0.1207 M H2, 0.0402 M N2, and 0.00272 M NH3. From this information, calculate the equilibrium constant.

Answer 1

N2(g) + 3 H2(g) -------------- 2 NH3(g)

at equilibrium concentrations of

[N2] = 0.0402M

[H2] = 0.1207M

[NH3] = 0.00272M

Kc = [[NH3]^2/[N2][H2]^3

Kc= (0.00272)^2/(0.0402)(0.1207)^3

Kc = 0.1047

Equilibrium constant = Kc= 0.105.