Question

Dinitrogen tetroxide converts into nitrogen dioxide according to the following equation N2O4(g) ⇋ 2NO2(g). At equilibrium, the concentration of N2O4 is found to be 0.02 M and the concentration of NO2 is found to be 0.08 M. Calculate the equilibrium constant (Kc) for this reaction.

Answer 1

To calculate the equilibrium constant  Kc  for the reaction, we can use the expression:Kc = [NO2]^2 / [N2O4]At equilibrium, the concentration of N2O4 is 0.02 M and the concentration of NO2 is 0.08 M. Plugging these values into the expression, we get:Kc =  0.08 ^2 /  0.02 Kc = 0.0064 / 0.02Kc = 0.32Therefore, the equilibrium constant  Kc  for this reaction is 0.32.