Abstract
THE hydrogen molecule ion H2+ has played a important part in theoretical chemistry, and its existence in the gaseous phase is well established. Some of our recent experimental work on the reactions of hydrogen atoms in aqueous solutions seems to suggest that a somewhat similar ion exists also in the aqueous phase, where one may have the equilibrium: One might be inclined to assume that this equilibrium is shifted very far towards the dissociation side because of the large heat of hydration of the proton. This, however, will be counteracted to some extent by the bond energy (2.65 eV.) of the H2+ molecule and also if this ion possesses a heat of hydration of considerable magnitude (its hydrated form is then perhaps better represented by H4O+.aq, similar to H3O+.aq).
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References
Cf. Weiss, J., Trans. Farad. Soc., 37, 463 (1941).
Cf. Weiss, J., Nature, 153, 748 (1944).
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WEISS, J. Role of Hydrogen Molecule Ions in Aqueous Solutions. Nature 165, 728 (1950). https://doi.org/10.1038/165728a0
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DOI: https://doi.org/10.1038/165728a0
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