A mixture of H₂(g) + I₂(g) ⇌ 2 HI(g) is at equilibrium inside a rigid container

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

Problem

A mixture of H₂(g) + I₂(g) ⇌ 2 HI(g) is at equilibrium inside a rigid container. Additional Ar(g) is injected until the total pressure doubles, while volume and temperature are unchanged. Indicate whether the equilibrium position shifts toward products, toward reactants, or remains unchanged, and state why.

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