The reversible reaction A(g) ⇌ B(g) has K_c = 1.5 at a certain temperature

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

Problem

The reversible reaction A(g) ⇌ B(g) has K_c = 1.5 at a certain temperature. Four sealed, identical containers (I–IV) each hold 10 total gas particles in the following compositions. Container I : 6 A and 4 B Container II : 4 A and 6 B Container III : 3 A and 7 B Container IV : 2 A and 8 B Which container is at (or closest to) equilibrium? (a) Container III (b) Container II (c) Container I (d) Container IV

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