Electrochemical study of the thermodynamics of hydrogen isotope exchange reactions in the water-hydrogen isotope exchange reactions in the water-hydrogen sulfide system
Thesis/Dissertation
·
OSTI ID:6670306
The changes in thermodynamic functions ..delta..G/sup 0/, ..delta..H/sup 0/ and ..delta..S/sup 0/ for the solution phase isotope exchange reaction OD/sup -/(aqD) + HS/sup -/(aq) in equilibrium OH/sup -/(aq) + ..delta..S/sup -/(aqD) (1) at 298.15K were experimentally determined to be ..delta..G/sup 0/ = 1.555 +/- 0.054kJ, ..delta..H/sup 0/ = 3.65 +/- 0.53kJ and ..delta..S/sup 0/ = 7.0 +/- 1.8 JK/sup -1/ by cell potential measurement on electrochemical cells. Statistical-thermodynamical calculations were conducted based on an unhydrated species model and a hydrated species model. The results suggest that in aqueous solution, OH/sup -/ can be considered as existing in the monohydrated form H/sub 3/O/sub 2//sup -/, and HS/sup -/ can be considered a existing in the unhydrated form.
- Research Organization:
- California Univ., Davis (USA)
- OSTI ID:
- 6670306
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
CHALCOGENIDES
DEUTERIUM
ELEMENTS
ENERGY
ENTHALPY
ENTROPY
FREE ENTHALPY
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
HYDROGEN SULFIDES
ISOTOPES
ISOTOPIC EXCHANGE
LABELLED COMPOUNDS
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SOLUTION HEAT
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
THERMODYNAMIC PROPERTIES
WATER
360603* -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
CHALCOGENIDES
DEUTERIUM
ELEMENTS
ENERGY
ENTHALPY
ENTROPY
FREE ENTHALPY
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
HYDROGEN SULFIDES
ISOTOPES
ISOTOPIC EXCHANGE
LABELLED COMPOUNDS
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SOLUTION HEAT
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
THERMODYNAMIC PROPERTIES
WATER