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Issue 40, 2017
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Effects of H+ and OH on H2O as probed by the 1-propanol probing methodology: differential thermodynamic approach

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Abstract

We applied what we call the “1-propanol (1P) probing methodology” on the effects of H+ and OH on liquid H2O. We found that H+ is an amphiphile with a modest hydrophobic and an equally modest hydrophilic contribution. Its hydration number is 2 ± 1, suggesting that the equilibrium hydration structure is like the Zundel type (H5O2+). OH, on the other hand, has a large hydration shell with 12 ± 3 H2O molecules and acts as a hydrophobe-like hydration center. In other words, it forms a hydration shell around itself, but as the probing 1P increases and the available H2O decreases, it exerts its influence over a longer range and reduces the hydrogen-bond probability of bulk H2O away from hydration shells, just as a hydrophobe does to bulk H2O.

Graphical abstract: Effects of H+ and OH− on H2O as probed by the 1-propanol probing methodology: differential thermodynamic approach

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Publication details

The article was received on 13 Aug 2017, accepted on 20 Sep 2017 and first published on 20 Sep 2017


Article type: Paper
DOI: 10.1039/C7CP05519F
Citation: Phys. Chem. Chem. Phys., 2017,19, 27413-27420
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    Effects of H+ and OH on H2O as probed by the 1-propanol probing methodology: differential thermodynamic approach

    Y. Koga, K. Miki and K. Nishikawa, Phys. Chem. Chem. Phys., 2017, 19, 27413
    DOI: 10.1039/C7CP05519F

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