Voltaic (Galvanic) Cells

• a redox reaction can be set up so that electrons run through a wire spontaneously + make electricity volts
• chemical (potential) energy -> electrical (kinetic) energy
• Voltaic/Galvanic Cell

  • made of two 1/2 reactions connected
• electrodies - solid conductors of electricity

  • anode (-) => oxidation, LEO @ anode (LEOA)
  • cathode (+) => reduction, GER @ cathose (GERC)
• Electrolyte - "bath", aqueous, paste

  • XNO3, XNO4
• Porous boundary - salt bridge, porous cup, membrane

  • to keep solutions neutral by allowing cations to flow to the cathode and anions to flow to the anode
  • cations -> cathode
  • anions -> anode
• voltmeter - measures amount of volts/electricity being produced
• e- don't swim and always travel in the same direction

  • anode -> cathode
• SRA present is oxidized at anode

  SOA present is reduced at cathode

  • LEO is A GERC
  • An Ox, Red Cat
• cell notation:

  anode | electrolyte || electrolyte | cathode