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J. Phys. Chem. 1985,89, 2119-2120 2119 steady states and their associated stabilities for combinations of
 

Summary: J. Phys. Chem. 1985,89, 2119-2120 2119
steady states and their associated stabilities for combinations of
constraints reported in ref 1. The model and associated parameter
values are given in Table I. The ranges and scan increments in
each constraint are listed in Table I1 as two-dimensional grids
of koand reactant concentration. A four-variable empirical rate
law model much like that in Table I was first used by Epstein
and co-workersI0to give a near quantitative description of bist-
ability in the iodatearsenous acid system. One and two-variable
reductions of the four-variablemodel have provided remarkably
accurate descriptions of the system with arsenous acid in stoi-
chiometric
Our search for potentially oscillatory behavior yielded only
single stable steady states or one unstable steady state lying be-
tween two stable steady states. Thus, according to these model
calculations the system is either monostable or bistable, but is not
oscillatory for the conditions reported in ref 1.
Based on findings in the bromate-cerium(II1) system,"-13
oscillatory behavior might be expected in the iodatearsenous acid
system near the critical point. We carried out an exhaustivesearch

  

Source: Andelman, David - School of Physics and Astronomy, Tel Aviv University

 

Collections: Materials Science; Physics