Question

Is enzyme catalysis is an example of h********** catalysis?

Answer 1

Are enzymes homogeneous catalysts or heterogeneous catalysts?

Colin Hong

Colin Hong, Chemistry explorer who survived A Level Chemistry

Answered Dec 16, 2017

Below are some definitions:

Homogeneous catalysis: Catalyst and reactants are in the same phase (either liquid or gaseous).

Heterogeneous catalysis: Catalyst and the reactants are in different physical phases.

Enzymes tend to be homogeneous catalysts because they are usually in the same phase as the biomolecule it reacts with, to speed up the decomposition of a biomolecule.

Heterogeneous catalysts tend to be transition metals (solid state) as they have vacant d-orbitals to accept and donate electrons with the substrate (usually in another phase), forming weak bonds with them and reducing the bond strength in the substrate (adsorption), thus speeding up the reaction....

hope it helps!

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