Enzyme homogenous vs heterogenous

[Ernie Lee 3F]

If the reactants aren't in the same phase (for instance one is solid and the other is liquid), and the enzyme is in the same phase as one of the reactants (for instance solid), would that enzyme be considered homogenous or heterogenous?

[Natalie Min 1C]

I believe it would be considered a heterogenous catalyst, because for the catalyst to be be homogenous, it needs to be in the same phase as all of the reactants.

[905737081]

Based on the definitions of homogeneous catalysts and heterogeneous catalysts, if the catalyst is in a different phase as the reactants it is heterogeneous (even if all of the reactants are in difference phases and one of the reactants is in the same phase as the catalyst).
In chemical reactions, if the reactants are not in the same phase, and the enzyme is in the same phase as one of the reactants, the enzyme would be considered as a heterogeneous catalyst.
A heterogeneous catalyst is a catalyst that exists in a different phase from the reactants. In this case, the enzyme is present in a different phase the one of the reactants, and therefore, it is a heterogeneous catalyst. The fact that the enzyme is present in the same phase as one of the reactants does not affect its classification as a heterogeneous catalysts. One the other hand, if the enzyme is present in the same phase as ALL the reactants, it would be considered as a homogeneous catalyst.

[Hien Nguyen 2G]

Hello!
If a catalyst is in the same phase as the reaction, then it is a homogeneous catalyst. All the phases must be the same and match up. If the catalyst is in a different phase from the reaction, then it is heterogeneous.
In your scenario, if the reactants aren't in the same phase, and the enzyme is in the same phase as one of the reactants, then the enzyme would be a heterogeneous catalyst.

[205756817]

The catalyst will still be heterogeneous as it is not in the same phase as all of the reactants. A catalyst will be considered homogenous if is in the same phase as all of the reactants

[samaagwani-disc2L]

If the enzyme is in the same phase as the reaction, then it is classified as a homogenous catalyst. The opposite is true for a heterogenous catalyst. When the catalyst is in a different phase as the reactants, it is heterogenous. In your case, the enzyme is present in a different phase than one of the reactants, making it a heterogeneous catalyst. Even though it is present in the same phase as ONE of the reactants, it is still heterogenous. It has to be in the same phase as all of the reactants to be classified as a homogenous catalyst.