CHEM 1050 Lecture Notes - Lecture 35: Alkene, Magic 2Ch, Rate Equation

• School: University of Guelph
• Department: Chemistry
• Course: CHEM 1050
• Professor: Rick De Laat

Document Summary

Increases both the rate of the forward and the reverse reacion without being consumed itself. Lowers acivaion energy by providing an alternate reacion pathway. Methods involving catalysts are oten complex and not fully understood as mechanisms are not easy to prove. The goal is always to catalyze the slow rate- determining step. Enzymes are biological catalysts that are highly speciic and have acive sites to provide beter orientaion or weaken reactant (substrate) bonds. Types of catalysts: homogeneous: reactants and catalyst are all in the same state/phase, heterogeneous: reactants and catalyst are in diferent state/phase. These are oten the most important reacions as solid catalysts provide a solid surface for liquid or gaseous hydrogenaion to occur on. An example of this is a catalyic converter in cars. C=c (alkene) + h2 ch3ch3 -double bond broken through hydrogenaion using catalysts such as solid ni, pb, or pd: this is an example of a heterogeneous catalyst.