A sealed 2.0 L vessel initially containing only C(g) is allowed to reach equilibrium…

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

Problem

A sealed 2.0 L vessel initially containing only C(g) is allowed to reach equilibrium for the reaction C(g) ⇌ D(g). A particulate diagram taken at equilibrium shows 18 molecules of C and 42 molecules of D. Which value is closest to the equilibrium constant K at this temperature? (a) 0.700.70 (b) 22 (c) 5.45.4 (d) 0.500.50

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