SELENIUM ISOTOPE EFFECTS IN THE REDUCTION OF SODIUM SELENITE AND OF SODIUM SELENATE

SELENIUM ISOTOPE EFFECTS IN THE REDUCTION OF SODIUM SELENITE AND OF SODIUM SELENATE

Selenium isotope effects in the reduction of sodium selenite and of sodium selenate have been studied. Rate constant ratios for the 76 Se and 82 Se species have been determined for the reactions Se iv  → Se 0 (1.017), Se vi  → Se iv (1.018), and Se 0  → Se iv (1.010) at room temperature. Theoretical...

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Veröffentlicht in:Canadian Journal of Chemistry (Canada) 1966-02, Vol.44 (4), p.419-427
Hauptverfasser: Rees, C. E, Thode, H. G
Format: Artikel
Sprache:eng
Schlagworte:
BINDING ENERGY
CHEMISTRY
Inorganic and Physical Chemistry
ISOTOPE EFFECTS
REACTION KINETICS
REDUCTION
SELENIUM 76
SELENIUM 82
SELENIUM OXIDES
SODIUM COMPOUNDS
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Zusammenfassung:Selenium isotope effects in the reduction of sodium selenite and of sodium selenate have been studied. Rate constant ratios for the 76 Se and 82 Se species have been determined for the reactions Se iv  → Se 0 (1.017), Se vi  → Se iv (1.018), and Se 0  → Se iv (1.010) at room temperature. Theoretical predictions of the first two ratios, from the use of models in which the rate-controlling steps are assumed to be SeO bond cleavages in SeO 3 2− and SeO 4 2− , respectively, lead to predictions in good agreement with experiment.
ISSN:0008-4042
1480-3291
DOI:10.1139/v66-057