J. Ungvarai, Z. Nagy-Ungvarai, J. Enderlein and S. C. Müller
The relaxation tail of wave profiles in the ferroin-catalysed Belousov–Zhabotinsky reaction was analysed combined with calculations on the basis of a slightly modified Oregonator model. The frequently used rate constant for the reaction between ferriin and the organic substrates malonic acid and bromomalonic acid was determined at 25°C as kJ=(3.1±0.2)×10-5 s-1.