Periodic Convection in the Bromate-Sulfite Reaction: A "Jumping" Wave
Document Type
Article
Publication Date
4-13-1995
Department
Chemistry and Biochemistry
School
Mathematics and Natural Sciences
Abstract
An unusual spatiotemporal phenomenon was observed in propagating fronts in the bromate‐sulfite system with an initial pH gradient, but not in chlorate‐sulfite nor iodate‐sulfite systems. Periodic acceleration and deceleration of the front were observed, which appeared as a "jumping" wave. An experimental method was developed to produce the pH gradient systematically and reproducibly in a tube. The effect of the gradient was studied. With the use of infrared and visible imaging the competition between chemically and thermally induced convection was observed. A qualitative model is proposed that includes the effect of pH gradint and the specific mechanism of the bromate oxidation of sulfite.
Publication Title
Journal of Physical Chemistry
Volume
99
Issue
15
First Page
5385
Last Page
5388
Recommended Citation
Nagy, I. P.,
Keresztessy, A.,
Pojman, J. A.
(1995). Periodic Convection in the Bromate-Sulfite Reaction: A "Jumping" Wave. Journal of Physical Chemistry, 99(15), 5385-5388.
Available at: https://aquila.usm.edu/fac_pubs/5841