At 298 K, a 1.00 L flask contains an equilibrium mixture of N2O4(g) and NO2(g)…

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, a 1.00 L flask contains an equilibrium mixture of N2O4(g) and NO2(g) according to the reaction N2O4(g) ⇌ 2 NO2(g). The measured concentrations are [N2O4] = 0.040 M and [NO2] = 0.20 M. Calculate the value of KcK_c for this reaction at 298 K. Report your answer with appropriate units or state that it is unitless, as applicable.

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