The diffusion of feni-and ferrocyanide ions in sodium hydroxide solutions has been studied b d\* means of a platinum rotating disk electrode. Results were obtained at variable concentrations an m the range of temperature between 24 and 40°C. The product Dq/Twas approximately constant and independent
The diffusion of ferro- and ferricyanide ions in aqueous potassium chloride solutions and in solutions containing carboxy-methylcellulose sodium salt
✍ Scribed by A.J. Arvía; J.C. Bazán; J.S.W. Carrozza
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 647 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
The diffusion of ferro-and ferricyanide ions in potassium chloride aqueous solutions and in aqueous solutions containing up to 1% of carboxymethylcellulose sodium salt has been studied between 23 and 43°C.
The application of the rotating disk electrode to evaluate diffusion coefficients of ions in slightly non-newtonian solutions is dealt with. The results are discussed in terms of the Dp/T ratios and the structure of the solutions with added CMC. Zusannnenfassung-Man untersuchte das Diffusionsverhalten des Ferro-und Ferricyanidions in whsriger Kaliumchloridlosung und in Losungen, welche bis zu 1 'A Natrium-Carboxymethylzellulose enthielten im Temperaturbereich zwischen 23 und 43°C. Im weiteren werden die Grundlagen ftir die Anwendung der rotierenden Scheibenelektrode zur Diffusionskoefhzientenmesstmg in leicht nicht-Newton&hen Liisungen behandelt. Man diskutiert die Ergebnisse mit Bezug auf die D,JZ'-Verhlltnisse und die Struktur der Carboxymethylzellulose enthaltenden Ltisungen. R&arm&Etude entre 23 et 43°C de la diffusion des ions ferro et ferricyanure dans des solutions aqueuses de chlorure de potassium et dans des solutions aqueuses de sels de sodium contenant jusqu'a 1% de carboxymethyl cellulose. L'on utilise une electrode a disque rotative pour &valuer les coetficients de diffusion des ions. Les rtsultats sont disc&s en liaison avec les rapports D,/T et la structure des solutions addition&s de CMC.
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