Question

What role does adsorption play in heterogeneous catalysis? 5.8 Why is adsorption always exothermic ?

Answer 1

the heterogeneous catalysis is the catalysis in which the catalyst is in the different physical states of the reactant . the most important of such reactions are those in which the reactant are in the gas phase while the catalyst is a solid

absorption is always exothermic because when absorption takes place a large amount of heat is evolved and released