This applet models the oscillating reaction known as the Brusselator (because it was first observed in Bruxelles/Brussel/Brussels, Belgium).
This applet models the reaction stochastically, by comparing a new, randomly generated number with the rate constant each small time interval. When the random number is less than the rate constant multiplied by the time interval, the event occurs (for first order reactions). In this reaction, the concentrations of A and B are maintained at fixed values throughout.
This reaction is notable, becuase the concentrations of X and Y oscillate (repeat), throughout the reaction, dependent only on their initial concentrations (and the rate constants, which don't change during the course of an actual physical experiment).
Click on the appropriate button below to increase/decrease the concentrations of X ([X]) or Y [Y], or any of the four rate constants k1, k2, k3, or k4. The rate constants apply to the list of equations in the box on the left side of the applet; k1 applies to the top reaction, k2 to the next equation, and so on.
© 2003-2011 by Lawrence T. Sein. All rights reserved.
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