Catalysts and Enzymes Catalyst provides a lower energy pathway for a reaction to occur not used up in the reaction speeds up the reaction Potential Energy profile Energy Distribution Types of catalysts: Homogeneous catalyst catalyst is the same phase as the reactants – Example: chlorine catalyzes the decomposition of ozone Heterogeneous catalysts catalyst is a different phase from the reactants – Example: catalytic converter in a car exhaust system Enzyme biological catalyst a protein that facilitates a chemical reaction – – Example: sucrase
Catalysts and Enzymes Catalyst provides a lower energy pathway for a reaction to occur not used up in the reaction speeds up the reaction Potential Energy profile Energy Distribution Types of catalysts: Homogeneous catalyst – catalyst is the same phase as the reactants Example: chlorine catalyzes the decomposition of ozone Heterogeneous catalysts – catalyst is a different phase from the reactants Example: catalytic converter in a car exhaust system Enzyme – biological catalyst – a protein that facilitates a chemical reaction Example: sucrase