The gas-phase reaction A(g) ⇌ B(g) reaches equilibrium at the same temperature in…

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

Problem

The gas-phase reaction A(g) ⇌ B(g) reaches equilibrium at the same temperature in four identical 1.0 L containers. Each circle represents one molecule. • Container W: 48 A and 2 B • Container X: 30 A and 20 B • Container Y: 20 A and 30 B • Container Z: 5 A and 45 B Which container is most consistent with an equilibrium constant K that is much greater than 1 at this temperature? (a) Y (b) W (c) Z (d) X

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