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a homogenous catalyst is in the same phase or state as the reactants and if it were a homogenous catalyst would absorb being in the same state of matter therefore we wouldn't consider adsorption since there is no contact between substances of different physical states while a heterogeneous catalyst is in a different state from reactants and therefore the reactants sit on the surface of the catalyst which can be thought of as water soaking into a sponge and the reactant breaching the surface of a catalyst
Madelyn Romberg 1H wrote:Homogeneous are in the same phase and move around the designated volume like it was a reactant or product. When it is a heterogeneous, it is a different phase and the reactants rest on the surface and are adsorbed.
What would this difference mean for the reaction? Like how would a homogeneous/heterogeneous reaction change the processes occurring within the reaction?
Homogeneous catalysts are in the same phase as the reactants in the reaction that is going to take place. Heterogeneous catalysts are in a different phase than the reactants in the reaction that is going to take place. The significance of this difference is important when you are considering the mechanism of the catalysis, for a homogeneous catalyst, the catalyst just mixes in with the other reactants (absorption) , while for the heterogeneous catalyst, adsorption occurs, and reactants just sit on the surface of the catalyst.
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