The argument corresponding to the fact that catalysis step which occurs over a surface, leaves the energy of the products desorption and this step takes place with very little energy change is to be stated. Concept introduction: The process of increasing the rate of the reaction with the help of a catalyst is known as catalysis. The two types of catalysis are homogeneous catalysis and heterogeneous catalysis.

Question

20. The Brusselator. This hypothetical system was first proposed by a group work- ing in Brussels [see Prigogine and Lefever (1968)] in connection with spatially nonuniform chemical patterns. Because certain steps involve trimolecular reac tions, it is not a model of any real chemical system but rather a prototype that has been studied extensively. The reaction steps are A-X. B+X-Y+D. 2X+ Y-3X, X-E. 305 It is assumed that concentrations of A, B, D, and E are kept artificially con stant so that only X and Y vary with time. (a) Show that if all rate constants are chosen appropriately, the equations de scribing a Brusselator are: dt A-(B+ 1)x + x²y, dy =Bx-x²y. di

Answer 1

Question

Chapter 22, Problem 22.49E

Interpretation Introduction

Interpretation:

The argument corresponding to the fact that catalysis step which occurs over a surface, leaves the energy of the products desorption and this step takes place with very little energy change is to be stated.

Concept introduction:

The process of increasing the rate of the reaction with the help of a catalyst is known as catalysis. The two types of catalysis are homogeneous catalysis and heterogeneous catalysis.

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20. The Brusselator. This hypothetical system was first proposed by a group work- ing in Brussels [see Prigogine and Lefever (1968)] in connection with spatially nonuniform chemical patterns. Because certain steps involve trimolecular reac tions, it is not a model of any real chemical system but rather a prototype that has been studied extensively. The reaction steps are A-X. B+X-Y+D. 2X+ Y-3X, X-E. 305 It is assumed that concentrations of A, B, D, and E are kept artificially con stant so that only X and Y vary with time. (a) Show that if all rate constants are chosen appropriately, the equations de scribing a Brusselator are: dt A-(B+ 1)x + x²y, dy =Bx-x²y. di

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