Question

Calculate the equilibrium constant for the reaction: 2 NOCl(g) ⇌ 2 NO(g) + Cl2(g) if at equilibrium the concentrations are [NOCl] = 0.050 M, [NO] = 0.030 M, and [Cl2] = 0.020 M.

Answer 1

To calculate the equilibrium constant  Kc  for the given reaction, we can use the expression:Kc =  [NO]^2 * [Cl2]  /  [NOCl]^2 At equilibrium, the concentrations are given as [NOCl] = 0.050 M, [NO] = 0.030 M, and [Cl2] = 0.020 M. Plug these values into the Kc expression:Kc =  0.030^2 * 0.020  /  0.050^2 Kc =  0.0009 * 0.020  /  0.0025 Kc = 0.018 / 0.0025Kc  7.2The equilibrium constant for the reaction is approximately 7.2.