In a closed vessel at constant temperature

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

Problem

In a closed vessel at constant temperature, the total pressure of a reversible gas-phase reaction stops changing after 15 min. An isotopic tracer introduced into one reactant later appears evenly distributed between both reactants and products. Describe what this observation reveals about the nature of the equilibrium in the vessel and justify your answer.

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