At 1000 K a gaseous mixture reaches equilibrium for the reaction 2 , SO _2(g)+ O…

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

Problem

At 1000 K a gaseous mixture reaches equilibrium for the reaction 2 SO2(g)+O2(g)⇌2 SO3(g).2\,\text{SO}_2(g)+\text{O}_2(g)\rightleftharpoons 2\,\text{SO}_3(g). The equilibrium concentrations are [SO2]=0.20 M[\text{SO}_2]=0.20\,\text{M}, [O2]=0.10 M[\text{O}_2]=0.10\,\text{M}, and [SO3]=0.30 M[\text{SO}_3]=0.30\,\text{M}. What is the value of KcK_c for this reaction at 1000 K? (a) 0.0440.044 (b) 4545 (c) 2323 (d) 1515

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