ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Oscillating reaction of the belousov-zhabotinskii type with ninhydrin

Ľ. Treindl and B. Lacová

Department of Physical Chemistry, Faculty of Natural Sciences, Comenius University, CS-84215 Bratislava

Abstract: The topic of this paper is spectrophotometry and Polarographie study of the oscillating reaction of the Belousov—Zhabotinskii type proceeding in the presence and absence of air oxygen with ninhydrin as substrate. A significant effect of stirring of the system on the course of the oscillating reaction at 15°C was observed. Owing to this effect, the time of duration of oscillations may increase even 17 times. The thoroughly investigated dependence of the time of duration of the oscillation on concentration of bromates, ninhydrin, and initial concentra­ tion of the Br^- ions is discussed from the viewpoint of the Field—Körös —Noyes (FKN) mechanism. In this connection, the key role of the inter­ mediate HBrO₂ is corroborated.

Full paper in Portable Document Format: 421a3.pdf

Chemical Papers 42 (1) 3–10 (1988)