For the reaction N2O4(g) ⇌ 2NO2(g) at 298 K

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

Problem

For the reaction N2O4(g) ⇌ 2NO2(g) at 298 K, the equilibrium constant is Kc=4.5×10−3K_c = 4.5\times10^{-3}. What is KcK_c for the reaction written in the reverse direction, 2NO2(g) ⇌ N2O4(g), at the same temperature? (a) 6.7×10−26.7\times10^{-2} (b) 2.2×1022.2\times10^{2} (c) 4.5×1034.5\times10^{3} (d) 4.5×10−34.5\times10^{-3}

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