Why do you think the reactions of the three halogens, ,

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

Problem

Why do you think the reactions of the three halogens, Cl2\mathrm{Cl}_2, Br2\mathrm{Br}_2, and I2\mathrm{I}_2, with H2\mathrm{H}_2 have such different values of their equilibrium constants at the same temperature? What can you conclude about the strength of bonding in the three hydrogen halides?

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