CHEM 411 Lecture Notes - Lecture 1: Amarna Letter Ea 19, Reaction Coordinate, Activated Complex
Document Summary
Collision theory: conditions necessary for a reaction to occur. Colliding particles must possess a minimum amount of energy (activation energy) Activation energy: activation energy may also be defined as the minimum energy required to start a chemical reaction. The activation energy of a reaction is usually denoted by ea and given in units of kilojoules per mole (kj/mol) or kilocalories per mole (kcal/mol). Transition state: the transition state of a chemical reaction is a particular configuration along the reaction coordinate. It is defined as the state corresponding to the highest potential energy along this reaction coordinate. Activated complex in which reactant bonds are partially broken and product bonds are partially formed, this is transition. High energy in transition stable, not stable. E: relative energy between reactants and products. Examples: photosynthesis, melting ice (feels cold to you b/c you are the surroundings and heat is absorbed from your hand) Enthalpy: enthalpy is a thermodynamic property of a system.
