Consider the reaction at constant temperature: C _6 H _ 12 O _6(s) + 6 , O _2(g) 6 ,…

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

Problem

Consider the reaction at constant temperature: C6H12O6(s)+6 O2(g)⇌6 CO2(g)+6 H2O(l)\text{C}_6\text{H}_{12}\text{O}_6(s) + 6\,\text{O}_2(g) \rightleftharpoons 6\,\text{CO}_2(g) + 6\,\text{H}_2\text{O}(l) Which of the following is the correct form of the equilibrium-constant expression KcK_c? (a) Kc=[CO2]6[H2O]6[O2]6K_c = \dfrac{[\text{CO}_2]^6[\text{H}_2\text{O}]^6}{[\text{O}_2]^6} (b) Kc=[O2]6[CO2]6K_c = \dfrac{[\text{O}_2]^6}{[\text{CO}_2]^6} (c) Kc=[CO2]6[O2]6K_c = \dfrac{[\text{CO}_2]^6}{[\text{O}_2]^6} (d) Kc=[CO2][O2]K_c = \dfrac{[\text{CO}_2]}{[\text{O}_2]}

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