At a given temperature the following equilibria are established

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

Problem

At a given temperature the following equilibria are established. 1) CO(g)+12 O2\tfrac{1}{2}\,O₂(g) ⇌ CO₂(g); K1=1.0×105K_1 = 1.0\times10^{5} 2) CO₂(g)+H₂(g) ⇌ CO(g)+H₂O(g); K2=1.6×10−1K_2 = 1.6\times10^{-1} Determine the value of the equilibrium constant for the reaction H₂(g)+12 O2\tfrac{1}{2}\,O₂(g) ⇌ H₂O(g). (a) 6.3×1056.3\times10^{5} (b) 6.3×1046.3\times10^{4} (c) 1.6×1041.6\times10^{4} (d) 1.6×1031.6\times10^{3}

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