Question

using collision theory and transition state theory, explain the action of a heterogenous catalyst? and same for homogenous catalyst?

please explain in the simplest way possible

Answer 1

By collision theory and transition state theory the action of heterogeneous and homogenous catalysis can be explained as below Initially the collision theory describes the kinetic way of approaching to forming the products through the effective collisions between the reactant molecules. As the transition state theory explains the thermodynamic point of view way of explanation where the rate of reaction effect by temperature change of reaction. In the both theories well known changes deformation of reactants with temperature change of reaction. k- p ZeT (Collsion Theory) where, p probablity factor number of Binary collisons e 'e M(Transition state Theory) assumeAHE

In the presence of heterogeneous catalyst, the rate of reaction depends upon the adsorption probability of the reactant (gases) on the metal or solid catalytic surfaces of heterogeneous catalyst and the effective way of unreacted with reactants also very high. It would provide the effective collisions between reactant molecules more over it should provide the thermodynamic stable point of product over homogenous catalysis. In homogenous catalysis the medium of all phases of reactants and catalysts are same (Generally liquids). Therefore the catalysis favours the effective way of collisions made between the reactant molecules. It is driving force to get activated complex over best transition state complex possible. It is kinetically driven the rate of reaction over thermodynamic