Using the equilibrium constant expression for this reaction:

Question

N2 + 3 H2 & 2 NH3
What is the Kc value using the following concentrations: [NH3]= 0.0100 M,
[N2]=0.0200 M, and [H2] = 0.0200 M.

Answer 1

To calculate Kc, we need to plug in the given concentrations into the equilibrium constant expression:

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

Kc = (0.0100)^2 / ((0.0200)(0.0200)^3)
Kc = 0.0001 / (0.000008)
Kc = 12.5

Therefore, the Kc value for the reaction N2 + 3 H2 -> 2 NH3 with the given concentrations is 12.5.