At 298 K, the equilibrium constant for the reaction N O (g) ⇌ 2 NO (g) is . A 1.0 L…

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

Problem

At 298 K, the equilibrium constant KcK_c for the reaction N2_2O4_4(g) ⇌ 2 NO2_2(g) is 4.5×10−34.5\times10^{-3}. A 1.0 L flask at this temperature contains 0.20 mol of N2_2O4_4 and 0.010 mol of NO2_2. Determine the direction in which the reaction will proceed as the system moves toward equilibrium, supporting your answer with a numerical comparison of appropriate values.

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