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Effects of speciation on equilibrium fractionations and rates of oxygen isotope exchange between (PO4)aq and H2O

✍ Scribed by James R O’Neil; Torsten W Vennemann; William F McKenzie

Book ID
117117175
Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
132 KB
Volume
67
Category
Article
ISSN
0016-7037

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The rate of oxygen exchange between truns-[Re(py),02]+ and solvent water in py-pyH' buffer solution follows simple first-order kinetics and both oxygens are equivalent. The half-life for isotopic oxygen exchange is about 12 h at a pH of 5.0, 25"C, and [pyl = 0.10 M. The observed rate constant for ex