CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
For the gas-phase equilibrium N2O4(g)⇌2NO2(g), the equilibrium constant at 298 K is Kc=6.0. A reaction mixture at 298 K contains [N2O4]=0.250M and [NO2]=0.600M. Calculate the reaction quotient Qc for the mixture and state whether the net reaction will proceed toward reactants or products as it moves toward equilibrium.