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The thermodynamics of solvation of ions. Part 2.—The enthalpy of hydration at 298.15 K
Abstract
So-called ‘absolute’ standard molar enthalpies of hydration of individual ions at 298.15 K have been obtained from the conventional data by means of the widely employed TATB extrathermodynamic assumption, i.e. that ΔhydH°[(C6H5)4As+]=ΔhydH°[(C6H5)4P+]=ΔhydH°[B(C6H5)–4]. This is possible by the evaluation of the standard molar enthalpies of hydration of salts involving the tetraphenyl ions with suitable counter-ions from their lattice enthalpies and heats of solution and appropriate combinations of these data. The resulting value of the standard molar enthalpy of hydration of the hydrogen ion, ΔhydH°[H+]=–1103 ± 7 kJ mol–1, agrees with the values obtained by other reliable methods. The values of ΔhydH° on this basis of numerous ions are tabulated.
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Metadata
- Authors
- Marcus, Y.
- Corresponding author
- Marcus, Yizhak
- ORCID
- Marcus, Yizhak
- Venue
- Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 1987
- Volume
- 83
- Issue
- 2
- Pages
- 339
- ISSN
- 0300-9599 (ISSN-L)
- OpenAlex
- W2017026866
- Cited by
- 247
- References
- 0
- Citations by year
- 2026: 17 · 2025: 7 · 2024: 6 · 2023: 7 · 2022: 7 · 2021: 7 · 2020: 8 · 2019: 10 · 2018: 16 · 2017: 10 · 2016: 14 · 2015: 8 · 2014: 13 · 2013: 8 · 2012: 9
- FWCI
- 2.16
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Chemical Thermodynamics and Molecular Structure
- Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Thermodynamic properties of mixtures
- Physical Sciences › Chemical Engineering › Filtration and Separation › Chemical and Physical Properties in Aqueous Solutions
- Keywords
- ion hydration, hydration enthalpy, tetraphenylborate, tetraphenylphosphonium, lattice enthalpy, enthalpy of solution, solvation thermodynamics
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