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Catalysts Chem 112

by: Rebecca Plummer

Catalysts Chem 112 Chem 112

Rebecca Plummer
Penn State
GPA 3.11
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About this Document

These notes cover the basics to catalysts and enzymes.
General Chemistry
Dr. Raymond Shaak
Class Notes




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This 1 page Class Notes was uploaded by Rebecca Plummer on Thursday February 4, 2016. The Class Notes belongs to Chem 112 at Pennsylvania State University taught by Dr. Raymond Shaak in Spring 2016. Since its upload, it has received 48 views. For similar materials see General Chemistry in Chemistry at Pennsylvania State University.


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Date Created: 02/04/16
Rebecca Plummer Dr. Raymond Shaack Catalysis RATE DEPENDS ON ACTIVATION ENERGY (E ) a  Catalysis: the use of a catalyst to change the speed of a reaction  Catalyst: a molecule that can change the speed of a reaction but is not permanently altered itself o Appears at the beginning of reaction o Appears unchanged after the reaction o Homogenous Catalysis: catalysts are in the same phase as the other reactants (solid, liquid, gas) o Heterogeneous Catalysis: catalysts are in s different phase as the other reactants  Enzyme Catalysis o Enzymes are catalysts in the body that change the speed of specific reactions in the body o They are very large proteins o Substrate: enzyme reactant o Active Sight: the place where the substrate attaches  Lowering the E by using a catalyst speeds up reactions a  When finding catalyst constant/uncatalyst constant: o K /k = e Ea(cat/e Ea(uncat) cat uncat o This equation can show such a small change in E can arastically change the k values and affect the rate of reactions.


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