Marangoni instability in the iodate-arsenous acid reaction front

Éva Pópity-Tóth, Gábor Pótári, István Erdos, D. Horváth, A. Tóth

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Horizontally propagating chemical fronts leading to the formation of a single stable convection roll are investigated in the iodate-arsenous acid reaction with arsenous acid stoichiometrically limiting, leaving the surface active iodine present in the product mixture. In sufficiently thin solution layers with open upper surface, the contribution of Marangoni instability is significantly enhanced. Acting in the same direction as buoyancy driven instability, it distorts the entire tilted reaction front that becomes 50% more elongated. The corresponding three-dimensional calculations based on the empirical rate-law of the reaction corroborate the experimental findings.

Original languageEnglish
Article number044719
JournalThe Journal of Chemical Physics
Volume141
Issue number4
DOIs
Publication statusPublished - Jul 28 2014

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Iodates
iodates
acids
Buoyancy
Iodine
buoyancy
iodine
convection
products
arsenous acid

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Marangoni instability in the iodate-arsenous acid reaction front. / Pópity-Tóth, Éva; Pótári, Gábor; Erdos, István; Horváth, D.; Tóth, A.

In: The Journal of Chemical Physics, Vol. 141, No. 4, 044719, 28.07.2014.

Research output: Contribution to journalArticle

Pópity-Tóth, Éva ; Pótári, Gábor ; Erdos, István ; Horváth, D. ; Tóth, A. / Marangoni instability in the iodate-arsenous acid reaction front. In: The Journal of Chemical Physics. 2014 ; Vol. 141, No. 4.
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