An aqueous solution at equilibrium contains the deep-red complex ion equilibrium Fe^…

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

Problem

An aqueous solution at equilibrium contains the deep-red complex ion equilibrium Fe3+(aq)+SCN−(aq)⇌FeSCN2+(aq).Fe^{3+}(aq)+SCN^{-}(aq) \rightleftharpoons FeSCN^{2+}(aq). Pure water is added to the system, doubling the total volume and halving all solute concentrations. Predict the direction of the net reaction immediately after dilution and explain your choice in one sentence.

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