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Observations of the diffusion coefficient of the perhydroxyl ion (HO−2) in lithium hydroxide solutions

✍ Scribed by E.L. Littauer; K.C. Tsai

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
393 KB
Volume
24
Category
Article
ISSN
0013-4686

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✦ Synopsis

The diffusion coefficient ofthe perhydroxyl ion (HO;) was dctermincd in 4.5 M LiOH supporting electrolyte. Over the range of concentration 0.2-0.8 M H,O, it was found to be independent ofconcentration and had a value of 5 * 0.2 x 10m6 cm'/s at 293 K. The experimental data were obtained cbronoamperometrically used a rde. At the limiting current, O2 evolution was found to be almost entirely supprcsscd and the current limiting species was therefore assumed to be the HOL ion. The electrochemical mechanism for the perhydroxyl reduction reaction was invoked to explain the experimental results.

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