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Kinetic Salt Effect in the 18O-Exchange Reaction between Bromate and Water

✍ Scribed by H. Gamsjäger; P. Baertschi

Publisher
John Wiley and Sons
Year
1972
Tongue
German
Weight
299 KB
Volume
55
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The kinetic salt effect in the ^18^O‐exchange reaction between bromate ion and water has been investigated at 60° in a range of ionic strength from 0.02M < I < 1.9M using NaNO~3~ or NaClO~4~ as inert salts. From the experimental data the following relation was deduced for the uncatalysed reaction path

In the H^+^‐catalysed reaction path the Brønsted‐Davies equation was obeyed up to I ⋍ 0.1M

At I > 0.8M the sign of Δ logk~2~/Δ I^1/2^ was positive. The theoretical interpretation of these results is consistent with the mechanistic evidence obtained previously from the rate law and the solvent isotope effects.

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