Reduction potential of the sup sm bullet CO sub 2 sup minus radical anion in aqueous solutions

Journal Article · Thu Apr 20 04:00:00 EDT 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100345a094· OSTI ID:5062698

Surdhar, P S; Mezyk, S P; Armstrong, D A ^[1]

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1. Univ. of Calgary, Alberta (Canada)

The reduction potential for the {sup {sm bullet}}CO{sub 2}{sup {minus}} radical anion has been determined by equilibration of formate with sulfhydryl radicals of {beta}-mercaptoethanol, penicillamine, and lipoamide in aqueous solutions at pH 3-6. The reaction {sup {sm bullet}}CO{sub 2}{sup {minus}} + e{sup {minus}} + H{sup +} = HCO{sub 2}{sup {minus}} yields the value E{degree}{sub 9} = 1.49 V with an uncertainty of {plus minus}0.06 V. On the basis of this value and the known free energies of CO{sub 2}(aq) and HCO{sub 2}{sup {minus}}(aq), E{degree}{sub 19} for CO{sub 2} + e{sup {minus}} = {sup {sm bullet}}CO{sub 2}{sup {minus}} was found to be -1.85 V.

• OSTI ID: 5062698
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:8; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400400 -- Electrochemistry
ANIONS
AQUEOUS SOLUTIONS
BEAMS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBOXYLIC ACID SALTS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
DISPERSIONS
ELECTRON BEAMS
ENERGY RANGE
EXPERIMENTAL DATA
FORMATES
INFORMATION
IONS
IRRADIATION
LEPTON BEAMS
MEV RANGE
MEV RANGE 01-10
MIXTURES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PARTICLE BEAMS
PH VALUE
PULSED IRRADIATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADICALS
RADIOLYSIS
REDUCTION
SOLUTIONS
SULFHYDRYL RADICALS