The reaction 2SO2(g) + O2(g) ⇌ 2SO3(g) has an equilibrium constant

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

Problem

The reaction 2SO2(g) + O2(g) ⇌ 2SO3(g) has an equilibrium constant KcK_c. Which of the following gives the equilibrium constant for the reaction written in the opposite direction, 2SO3(g) ⇌ 2SO2(g) + O2(g)? (a) Kc2K_c^{2} (b) Kc\sqrt{K_c} (c) 1Kc\dfrac{1}{K_c} (d) 1Kc2\dfrac{1}{K_c^{2}}

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