File:79. Осцилаторни реакции (хемиско нишало).ogg

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English: Oscillatory reactions

The phenomenon of oscillating chemical reactions was first discovered (independently) by Boris Belousov and Anatol Zhabotinsky. In all cases of such reactions it is dealt with systems ‘far from equilibrium’.

In this particular case, a solution of diluted sulfuric acid containing malonic acid and potassium bromated is prepared. Upon addition of manganese(II) sulfate, periodic color changes occur in the system: orange-brown (color of manganese(IV)) – colorless (color of manganese(II)).[1]

Performed by the retired Prof. PhD Vladimir Petruševski. The planning of the experiment also included the Prof. PhD Miha Bukleski and the students Mihail Trajkov and Darko Stojčev, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.
Македонски: Осцилаторни реакции

Осцилаторните реакции се првпат изведени од Борис Белоусов и Анатол Жаботински, кои независно еден од друг дошле до откритие дека и хемиските реакции може да покажуваат осцилаторно поведение. Во сите случаи станува збор за автокаталитички реакции и за системи што се далеку од рамнотежа.

Во конкретниов случај во раствор од разредена сулфурна киселина, малонска киселина и калиум бромат, се додава манган(II) сулфат, при што почнуваат периодични промени на бојата на растворот: портокаловокафеаво (боја карактеристична за четиривалентен манган) – безбојно (боја карактеристична за двовалентен манган).[2]

Изведено од пензионираниот Проф. д-р Владимир Петрушевски. Во планирањето на опитот, исто така беа вклучени Проф. д-р Миха Буклески, и студентите Михаил Трајков и Дарко Стојчев, Институт за хемија, ПМФ, УКИМ, Скопје, Македонија.
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  1. ↑ Експериментот во наставата по хемија (translated title: The Experiment in the Teaching of Chemistry), V.M. Petruševski and M. Najdoski, Magor, Skopje, 2000, p. 273.
  2. ↑ Експериментот во наставата по хемија, В.М. Петрушевски и М. Најдоски, Магор, Скопје, 2000, стр. 273.

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