Thermodynamics of Electrochemical Reactions

Equilibrium electrochemistryEquilibrium electrochemistry
? Half-reactions and electrodes
? Varieties of cells
? The electromotive force
? Standard potentials
? Applications of standard potentials
? “Electrochemical method” : The ability to make precise measurements of currents and potential differences (voltages)
? “Electrochemical cell” : Consists of two electrodes contact with an electrolyte
? “Galvanic cell” : An electrochemical cell that produces electricity as a result of the spontaneous reaction
? “Electrolytic cell” : An electrochemical cell in which a nonspontaneous reaction is driven by an external source of current.
Half-reactions and electrodes
Oxidation : The removal of electrons from a species
Reduction : The addition of electrons to a species
Redox reaction : Transfer of electrons from one species to another.
Equilibrium electrochemistry
? Half-reactions and electrodes
? Varieties of cells
? The electromotive force
? Standard potentials
? Applications of standard potentials
? “Electrochemical method” : The ability to make precise measurements of currents and potential differences (voltages)
? “Electrochemical cell” : Consists of two electrodes contact with an electrolyte
? “Galvanic cell” : An electrochemical cell that produces electricity as a result of the spontaneous reaction
? “Electrolytic cell” : An electrochemical cell in which a nonspontaneous reaction is driven by an external source of current.
Half-reactions and electrodes
Oxidation : The removal of electrons from a species
Reduction : The addition of electrons to a species
Redox reaction : Transfer of electrons from one species to another.