section_path: Rates, mechanisms, and energies
section_name: Rates, mechanisms, and energies
paragraph_text: Rates, mechanisms, and energies
  
  Redox reactions can occur slowly, as in the formation of rust, or rapidly, as in the case of burning fuel. Electron transfer reactions are generally fast, occurring within the time of mixing.
  
  The mechanisms of atom-transfer reactions are highly variable because many kinds of atoms can be transferred. Such reactions can also be quite complex, involving many steps. The mechanisms of electron-transfer reactions occur by two distinct pathways, inner sphere electron transfer and outer sphere electron transfer.
  
  Analysis of bond energies and ionization energies in water allows calculation of the thermodynamic aspects of redox reactions.