The reversible reaction D(g) ⇌ E(g) is at equilibrium in four identical containers

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

Problem

The reversible reaction D(g) ⇌ E(g) is at equilibrium in four identical containers. Particle counts are: W: 10 D and 10 E  X: 5 D and 5 E  Y: 15 D and 5 E  Z: 4 D and 12 E Identify the two containers that must have identical equilibrium constants for the reaction and state, in one sentence, the reasoning based on the particle counts.

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