The nitric acid/nitrous acid and ferroin/ferriin system: A reaction that demonstrates autocatalysis, reversibility, pseudo orders, chemical waves, and concentration jump

Abstract

A reaction that demonstrates autocatalysis, reversibility, pseudo orders, chemical waves, and concentration jump.

The citric acid–MnIII,IVO2(birnessite) reaction. Electron transfer, complex formation, and autocatalytic feedback

“…of this kind have been extensively investigated in solution (Bazsa et al, 1991;Epstein and Pojman, 1998), but relatively little is known about heterogeneous autocatalytic reactions (Kurin-Csorgei et al, 2004). It is necessary to account for changes in surface site concentration.…”

Reversible, mixed first- and second-order and autocatalytic reactions as particular cases of a single kinetic rate law

“…On the other hand, more complicated mechanisms do not conform to the formula (15). resembling the one illustrated in Figure 2, but whose underlying mechanism did not belong to any of the above schemes.…”

“…y is always different from x as the process of decay of A (ut + v2) is not the same as that of B (v2 alone). It is thus mathematically incorrect to employ an integrated relationship such as (15) to describe the kinetics of this reaction.17 Similarly, the above rate equation cannot be reduced to a singlevariable quadratic rate equation.…”