Question

Calculate the equilibrium constant (Kc) of the chemical reaction: 2NOCl(g) ⇌ 2NO(g) + Cl2(g) where the concentration of NOCl is 0.5 M, NO is 0.2 M, and Cl2 is 0.1 M at equilibrium at a certain temperature.

Answer 1

To calculate the equilibrium constant  Kc  for the given reaction, we need to use the formula:Kc = [products]^coefficients / [reactants]^coefficientsFor the given reaction:2NOCl g   2NO g  + Cl2 g Kc =  [NO]^2 * [Cl2]  / [NOCl]^2We are given the concentrations of the species at equilibrium:[NOCl] = 0.5 M[NO] = 0.2 M[Cl2] = 0.1 MNow, we can plug these values into the Kc formula:Kc =  0.2^2 * 0.1  /  0.5^2 Kc =  0.04 * 0.1  / 0.25Kc = 0.004 / 0.25Kc = 0.016So, the equilibrium constant  Kc  for the given reaction is 0.016.