CHEM 250 Chapter Notes - Chapter 6: Enthalpy, Three Steps, Exergonic Reaction
Document Summary
There are four general types of organic reactions: additions, eliminations, substitutions, and rearrangements. Two reactants add together to form a single product with no atoms left over. Occur when a single reactant splits into two products. Two reactants exchange parts to give two new products. A single reactant undergoes a reorganization of bonds and atoms to yield an isomeric product. An overall description of how a reaction occurs is called a reaction mechanism. A complete mechanism must also account for all reactants used all products formed. There are two ways in which a covalent electron bond can break: bond can break in an electronically symmetrical way so that one electron remains with each product fragment. Cleavage is said to be homolytic: bond can break in an electronically unsymmetrical way so that both bonding electrons remain with one product fragment. The movement of one electron in the symmetrical process is indicated using a half-headed, or.
