At 350 ,K the following equilibrium is established in a rigid 2.00 ,L vessel: The…

CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)

Problem

At 350\,K the following equilibrium is established in a rigid 2.00\,L vessel: N2O4(g)⇌2 NO2(g)\mathrm{N_2O_4(g) \rightleftharpoons 2\,NO_2(g)} The vessel is initially charged with 0.200\,mol of N2O4\mathrm{N_2O_4} and no NO2\mathrm{NO_2}. When equilibrium is reached, 0.0400\,mol of N2O4\mathrm{N_2O_4} remain. Calculate the equilibrium constant KcK_c at 350\,K.

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