Question

 Determine which, if any of the following reaction mixtures of N2O4 and NO2 are at equilibrium. For any that are not at equilibrium, state which direction the reaction would proceed to establish an equilibrium mixture.

N2O4(g)           2NO2(g) Kc  =  0.16 at 25oC

1. [N2O4(g)]  =  0.15M [NO2(g)]  =  0.65M Find Q (left)
   
2. [N2O4(g)]  =  0.68M [NO2(g)]  =  0.33M at equilibrium
   
3. [N2O4(g)]  =  0.30M [NO2(g)]  =  0.22M at equilibrium

Answer 1

The reaction will proceed in the reverse direction, converting products into reactants.

[N2O4(g)] = 0.15M [NO2(g)] = 0.65M Find Q (left)